daf897d559
In addition to division by zero, signed division also traps for SignedMin / -1. This was handled in isSafeToSpeculativelyExecute(), but not in Constant::canTrap().
172 lines
5.3 KiB
LLVM
172 lines
5.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
|
|
|
|
@G = extern_weak global i32
|
|
|
|
; PR3354
|
|
; Do not merge bb1 into the entry block, it might trap.
|
|
|
|
define i32 @admiral(i32 %a, i32 %b) {
|
|
; CHECK-LABEL: @admiral(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp sle i32 [[A:%.*]], [[B:%.*]]
|
|
; CHECK-NEXT: br i1 [[C]], label [[COMMON_RET:%.*]], label [[BB1:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: [[D:%.*]] = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[D]], i32 927, i32 42
|
|
; CHECK-NEXT: br label [[COMMON_RET]]
|
|
; CHECK: common.ret:
|
|
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB1]] ]
|
|
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
|
|
;
|
|
%c = icmp sle i32 %a, %b
|
|
br i1 %c, label %bb2, label %bb1
|
|
bb1:
|
|
%d = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
|
|
br i1 %d, label %bb6, label %bb2
|
|
bb2:
|
|
ret i32 42
|
|
bb6:
|
|
ret i32 927
|
|
}
|
|
|
|
define i32 @ackbar(i1 %c) {
|
|
; CHECK-LABEL: @ackbar(
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB5:%.*]], label [[COMMON_RET:%.*]]
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), i32 42, i32 927
|
|
; CHECK-NEXT: br label [[COMMON_RET]]
|
|
; CHECK: common.ret:
|
|
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB5]] ]
|
|
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
|
|
;
|
|
br i1 %c, label %bb5, label %bb6
|
|
bb5:
|
|
br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7
|
|
bb6:
|
|
ret i32 42
|
|
bb7:
|
|
ret i32 927
|
|
}
|
|
|
|
; FP ops don't trap by default, so this is safe to hoist.
|
|
|
|
define i32 @tarp(i1 %c) {
|
|
; CHECK-LABEL: @tarp(
|
|
; CHECK-NEXT: common.ret:
|
|
; CHECK-NEXT: [[C_NOT:%.*]] = xor i1 [[C:%.*]], true
|
|
; CHECK-NEXT: [[BRMERGE:%.*]] = or i1 [[C_NOT]], fcmp oeq (float fdiv (float 3.000000e+00, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.000000e+00)
|
|
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = select i1 [[BRMERGE]], i32 42, i32 927
|
|
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
|
|
;
|
|
br i1 %c, label %bb8, label %bb9
|
|
bb8:
|
|
br i1 fcmp oeq (float fdiv (float 3.0, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.0), label %bb9, label %bb10
|
|
bb9:
|
|
ret i32 42
|
|
bb10:
|
|
ret i32 927
|
|
}
|
|
|
|
@g = external global i32
|
|
|
|
define <1 x i64> @trapping_const_agg(i1 %c) {
|
|
; CHECK-LABEL: @trapping_const_agg(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[END:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: br label [[END]]
|
|
; CHECK: end:
|
|
; CHECK-NEXT: [[PHI:%.*]] = phi <1 x i64> [ zeroinitializer, [[ENTRY:%.*]] ], [ <i64 srem (i64 1, i64 ptrtoint (i32* @g to i64))>, [[IF]] ]
|
|
; CHECK-NEXT: ret <1 x i64> [[PHI]]
|
|
;
|
|
entry:
|
|
br i1 %c, label %if, label %end
|
|
|
|
if:
|
|
br label %end
|
|
|
|
end:
|
|
%phi = phi <1 x i64> [ zeroinitializer, %entry ], [ <i64 srem (i64 1, i64 ptrtoint (i32* @g to i64))>, %if ]
|
|
ret <1 x i64> %phi
|
|
}
|
|
|
|
define i64 @pt56038_sdiv_minus_one(i1 %c) {
|
|
; CHECK-LABEL: @pt56038_sdiv_minus_one(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[END:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: br label [[END]]
|
|
; CHECK: end:
|
|
; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ sdiv (i64 ptrtoint (i32* @g to i64), i64 -1), [[IF]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: ret i64 [[PHI]]
|
|
;
|
|
entry:
|
|
br i1 %c, label %if, label %end
|
|
|
|
if:
|
|
br label %end
|
|
|
|
end:
|
|
%phi = phi i64 [ sdiv (i64 ptrtoint (i32* @g to i64), i64 -1), %if ], [ 0, %entry ]
|
|
ret i64 %phi
|
|
}
|
|
|
|
define i64 @pt56038_srem_not_minus_one(i1 %c) {
|
|
; CHECK-LABEL: @pt56038_srem_not_minus_one(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], i64 sdiv (i64 ptrtoint (i32* @g to i64), i64 -2), i64 0
|
|
; CHECK-NEXT: ret i64 [[SPEC_SELECT]]
|
|
;
|
|
entry:
|
|
br i1 %c, label %if, label %end
|
|
|
|
if:
|
|
br label %end
|
|
|
|
end:
|
|
%phi = phi i64 [ sdiv (i64 ptrtoint (i32* @g to i64), i64 -2), %if ], [ 0, %entry ]
|
|
ret i64 %phi
|
|
}
|
|
|
|
define i64 @pt56038_sdiv_signed_min(i1 %c) {
|
|
; CHECK-LABEL: @pt56038_sdiv_signed_min(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[END:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: br label [[END]]
|
|
; CHECK: end:
|
|
; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ sdiv (i64 -9223372036854775808, i64 ptrtoint (i32* @g to i64)), [[IF]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: ret i64 [[PHI]]
|
|
;
|
|
entry:
|
|
br i1 %c, label %if, label %end
|
|
|
|
if:
|
|
br label %end
|
|
|
|
end:
|
|
%phi = phi i64 [ sdiv (i64 -9223372036854775808, i64 ptrtoint (i32* @g to i64)), %if ], [ 0, %entry ]
|
|
ret i64 %phi
|
|
}
|
|
|
|
define i64 @pt56038_sdiv_not_signed_min_but_maybe_div_by_zero(i1 %c) {
|
|
; CHECK-LABEL: @pt56038_sdiv_not_signed_min_but_maybe_div_by_zero(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[END:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: br label [[END]]
|
|
; CHECK: end:
|
|
; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ sdiv (i64 -9223372036854775807, i64 ptrtoint (i32* @g to i64)), [[IF]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: ret i64 [[PHI]]
|
|
;
|
|
entry:
|
|
br i1 %c, label %if, label %end
|
|
|
|
if:
|
|
br label %end
|
|
|
|
end:
|
|
%phi = phi i64 [ sdiv (i64 -9223372036854775807, i64 ptrtoint (i32* @g to i64)), %if ], [ 0, %entry ]
|
|
ret i64 %phi
|
|
}
|