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clang-p2996/llvm/test/Transforms/IndVarSimplify/finite-exit-comparisons.ll
Philip Reames 0836a1059d Extend transform introduced in D111896 to multiple exits 
This is trivial.  It was left out of the original review only because we had multiple copies of the same code in review at the same time, and keeping them in sync was easiest if the structure was kept in sync.
2021-10-19 12:12:19 -07:00

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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -indvars -S < %s | FileCheck %s
; A collection of tests which domonstrate cases where we can use properties
; of the loop (i.e. single exit, finite, mustprogress) to optimize conditions
; and extends we couldn't otherwise handle.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
define void @slt_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @slt_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
;; Range logic doesn't depend on must execute
define void @slt_constant_rhs_maythrow(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @slt_constant_rhs_maythrow(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: call void @unknown()
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
call void @unknown()
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
;; Range logic doesn't depend on must execute
define void @slt_constant_rhs_multiexit(i16 %n.raw, i8 %start, i1 %c) mustprogress {
; CHECK-LABEL: @slt_constant_rhs_multiexit(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[LATCH:%.*]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: br i1 [[C:%.*]], label [[LATCH]], label [[FOR_END:%.*]]
; CHECK: latch:
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %latch ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
br i1 %c, label %latch, label %for.end
latch:
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @slt_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @slt_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
; Case where we could prove this using range facts, but not must exit reasoning
define void @slt_non_constant_rhs_no_mustprogress(i16 %n.raw) {
; CHECK-LABEL: @slt_non_constant_rhs_no_mustprogress(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N:%.*]] = and i16 [[N_RAW:%.*]], 255
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], [[N]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%n = and i16 %n.raw, 255
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
@G = external global i8
; Negative case where the loop could be infinite and make progress
define void @slt_neg_well_defined_infinite(i16 %n) mustprogress {
; CHECK-LABEL: @slt_neg_well_defined_infinite(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: store volatile i8 [[IV]], i8* @G, align 1
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
store volatile i8 %iv, i8* @G
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
; Negative case with no mustprogress rsltuirement
define void @slt_neg_no_mustprogress(i16 %n) {
; CHECK-LABEL: @slt_neg_no_mustprogress(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
declare void @unknown()
define void @slt_neg_abnormal_exit(i16 %n) mustprogress {
; CHECK-LABEL: @slt_neg_abnormal_exit(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: call void @unknown()
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
call void @unknown()
%zext = zext i8 %iv.next to i16
%cmp = icmp slt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
; For the other comparison flavors, we only bother to repeat the positive
; tests since the negative variants are mostly the same.
define void @ne_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @ne_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ne i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ne_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @ne_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ne i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @eq_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @eq_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp eq i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @eq_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @eq_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp eq i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sgt_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @sgt_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sgt i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sgt_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @sgt_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sgt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sle_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @sle_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ule i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sle i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sle_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @sle_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp sle i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sle i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sge_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @sge_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sge i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @sge_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @sge_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp sge i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ult_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @ult_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ult i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ult_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @ult_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ult i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ugt_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @ugt_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ugt i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ugt_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @ugt_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ugt i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ule_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @ule_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ule i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ule i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @ule_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @ule_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp ule i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp ule i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @uge_constant_rhs(i16 %n.raw, i8 %start) mustprogress {
; CHECK-LABEL: @uge_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[START:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[ZEXT]], 254
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ %start, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp uge i16 %zext, 254
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
define void @uge_non_constant_rhs(i16 %n) mustprogress {
; CHECK-LABEL: @uge_non_constant_rhs(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[IV_NEXT]] to i16
; CHECK-NEXT: [[CMP:%.*]] = icmp uge i16 [[ZEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%iv = phi i8 [ %iv.next, %for.body ], [ 0, %entry ]
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv.next to i16
%cmp = icmp uge i16 %zext, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
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