caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
dda73336ad22bd0b5ecda17040c50fb10fcbe5fb
clang-p2996/llvm/test/Transforms/ConstraintElimination/sge.ll
Florian Hahn 13ffde316a [ConstraintElim] Remove dead compares after simplification. 
Remove compares after replacing all uses. Cleaning dead compares can
enable additional simplifications when adjusting the position of the
pass slightly. In particular, it seems like the additional dead
instructions may prevent SimplifyCFG performing some folds.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D158760
2023-08-24 22:12:57 +01:00

266 lines
6.8 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
declare void @use(i1)
define void @test_1_variable_constraint(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @test_1_variable_constraint(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[X]], 10
; CHECK-NEXT: call void @use(i1 [[C_2]])
; CHECK-NEXT: [[C_3:%.*]] = icmp sge i32 [[Y]], [[X]]
; CHECK-NEXT: call void @use(i1 [[C_3]])
; CHECK-NEXT: [[C_4:%.*]] = icmp sge i32 10, [[X]]
; CHECK-NEXT: call void @use(i1 [[C_4]])
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: call void @use(i1 false)
; CHECK-NEXT: [[C_5:%.*]] = icmp sge i32 [[X]], 10
; CHECK-NEXT: call void @use(i1 [[C_5]])
; CHECK-NEXT: [[C_6:%.*]] = icmp sge i32 10, [[X]]
; CHECK-NEXT: call void @use(i1 [[C_6]])
; CHECK-NEXT: ret void
;
entry:
%c.1 = icmp sge i32 %x, %y
br i1 %c.1, label %bb1, label %bb2
bb1:
%t.1 = icmp sge i32 %x, %y
call void @use(i1 %t.1)
%c.2 = icmp sge i32 %x, 10
call void @use(i1 %c.2)
%c.3 = icmp sge i32 %y, %x
call void @use(i1 %c.3)
%c.4 = icmp sge i32 10, %x
call void @use(i1 %c.4)
ret void
bb2:
%t.2 = icmp sge i32 %y, %x
call void @use(i1 %t.2)
%f.1 = icmp sge i32 %x, %y
call void @use(i1 %f.1)
%c.5 = icmp sge i32 %x, 10
call void @use(i1 %c.5)
%c.6 = icmp sge i32 10, %x
call void @use(i1 %c.6)
ret void
}
define void @test_1_constant_constraint(i32 %x) {
; CHECK-LABEL: @test_1_constant_constraint(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], 10
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[X]], 11
; CHECK-NEXT: call void @use(i1 [[C_2]])
; CHECK-NEXT: [[C_4:%.*]] = icmp sge i32 10, [[X]]
; CHECK-NEXT: call void @use(i1 [[C_4]])
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: call void @use(i1 false)
; CHECK-NEXT: call void @use(i1 false)
; CHECK-NEXT: [[C_5:%.*]] = icmp sge i32 [[X]], 9
; CHECK-NEXT: call void @use(i1 [[C_5]])
; CHECK-NEXT: [[C_6:%.*]] = icmp sge i32 1, [[X]]
; CHECK-NEXT: call void @use(i1 [[C_6]])
; CHECK-NEXT: ret void
;
entry:
%c.1 = icmp sge i32 %x, 10
br i1 %c.1, label %bb1, label %bb2
bb1:
%t.1 = icmp sge i32 %x, 10
call void @use(i1 %t.1)
%t.2 = icmp sge i32 %x, 9
call void @use(i1 %t.2)
%c.2 = icmp sge i32 %x, 11
call void @use(i1 %c.2)
%c.4 = icmp sge i32 10, %x
call void @use(i1 %c.4)
ret void
bb2:
%t.3 = icmp sge i32 11, %x
call void @use(i1 %t.3)
%f.1 = icmp sge i32 %x, 10
call void @use(i1 %f.1)
%f.1.1 = icmp sge i32 %x, 10
call void @use(i1 %f.1.1)
%c.5 = icmp sge i32 %x, 9
call void @use(i1 %c.5)
%c.6 = icmp sge i32 1, %x
call void @use(i1 %c.6)
ret void
}
define i32 @test1(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[EXIT:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[Y]], [[Z:%.*]]
; CHECK-NEXT: br i1 [[C_2]], label [[BB2:%.*]], label [[EXIT]]
; CHECK: bb2:
; CHECK-NEXT: br i1 true, label [[BB3:%.*]], label [[EXIT]]
; CHECK: bb3:
; CHECK-NEXT: ret i32 10
; CHECK: exit:
; CHECK-NEXT: ret i32 20
;
entry:
%c.1 = icmp sge i32 %x, %y
br i1 %c.1, label %bb1, label %exit
bb1:
%c.2 = icmp sge i32 %y, %z
br i1 %c.2, label %bb2, label %exit
bb2:
%c.3 = icmp sge i32 %x, %z
br i1 %c.3, label %bb3, label %exit
bb3:
ret i32 10
exit:
ret i32 20
}
define i32 @test2(i32 %x, i32 %y, i32 %z, i32 %a) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[EXIT:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[Y]], [[Z:%.*]]
; CHECK-NEXT: br i1 [[C_2]], label [[BB2:%.*]], label [[EXIT]]
; CHECK: bb2:
; CHECK-NEXT: [[C_3:%.*]] = icmp sge i32 [[X]], [[A:%.*]]
; CHECK-NEXT: br i1 [[C_3]], label [[BB3:%.*]], label [[EXIT]]
; CHECK: bb3:
; CHECK-NEXT: ret i32 10
; CHECK: exit:
; CHECK-NEXT: ret i32 20
;
entry:
%c.1 = icmp sge i32 %x, %y
br i1 %c.1, label %bb1, label %exit
bb1:
%c.2 = icmp sge i32 %y, %z
br i1 %c.2, label %bb2, label %exit
bb2:
%c.3 = icmp sge i32 %x, %a
br i1 %c.3, label %bb3, label %exit
bb3:
ret i32 10
exit:
ret i32 20
}
define i32 @test3(i32 %x, i32 %y) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], 10
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[EXIT:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[Y:%.*]], 20
; CHECK-NEXT: br i1 [[C_2]], label [[BB2:%.*]], label [[EXIT]]
; CHECK: bb2:
; CHECK-NEXT: ret i32 10
; CHECK: exit:
; CHECK-NEXT: ret i32 20
;
entry:
%c.1 = icmp sge i32 %x, 10
br i1 %c.1, label %bb1, label %exit
bb1:
%c.2 = icmp sge i32 %y, 20
br i1 %c.2, label %bb2, label %exit
bb2:
ret i32 10
exit:
ret i32 20
}
define i32 @test4(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[C_1]], label [[BB1:%.*]], label [[EXIT:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[C_2:%.*]] = icmp sge i32 [[Y]], [[Z:%.*]]
; CHECK-NEXT: br i1 [[C_2]], label [[BB2:%.*]], label [[EXIT]]
; CHECK: bb2:
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: [[U_1:%.*]] = icmp eq i32 [[X]], [[Z]]
; CHECK-NEXT: call void @use(i1 [[U_1]])
; CHECK-NEXT: ret i32 10
; CHECK: exit:
; CHECK-NEXT: ret i32 20
;
entry:
%c.1 = icmp sge i32 %x, %y
br i1 %c.1, label %bb1, label %exit
bb1:
%c.2 = icmp sge i32 %y, %z
br i1 %c.2, label %bb2, label %exit
bb2:
%t.1 = icmp sge i32 %x, %z
call void @use(i1 %t.1)
%u.1 = icmp eq i32 %x, %z
call void @use(i1 %u.1)
ret i32 10
exit:
ret i32 20
}
define i1 @sge_sgt(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @sge_sgt(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = icmp sgt i32 [[X:%.*]], -1
; CHECK-NEXT: br i1 [[C_1]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: ret i1 true
; CHECK: else:
; CHECK-NEXT: ret i1 false
;
entry:
%c.1 = icmp sgt i32 %x, -1
br i1 %c.1, label %then, label %else
then:
%t.1 = icmp sge i32 %x, 0
ret i1 %t.1
else:
%f.1 = icmp sge i32 %x, 0
ret i1 %f.1
}
Reference in New Issue View Git Blame Copy Permalink