f4f7df037e
This pass is like DeadCodeEliminationPass, but only does one pass through a function instead of iterating on users of eliminated instructions. DeadCodeEliminationPass should be used in all cases. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D87933
43 lines
876 B
LLVM
43 lines
876 B
LLVM
; Reassociation should apply to Add, Mul, And, Or, & Xor
|
|
;
|
|
; RUN: opt < %s -reassociate -instcombine -dce -S | FileCheck %s
|
|
|
|
define i32 @test_mul(i32 %arg) {
|
|
; CHECK-LABEL: test_mul
|
|
; CHECK-NEXT: %tmp2 = mul i32 %arg, 144
|
|
; CHECK-NEXT: ret i32 %tmp2
|
|
|
|
%tmp1 = mul i32 12, %arg
|
|
%tmp2 = mul i32 %tmp1, 12
|
|
ret i32 %tmp2
|
|
}
|
|
|
|
define i32 @test_and(i32 %arg) {
|
|
; CHECK-LABEL: test_and
|
|
; CHECK-NEXT: %tmp2 = and i32 %arg, 14
|
|
; CHECK-NEXT: ret i32 %tmp2
|
|
|
|
%tmp1 = and i32 14, %arg
|
|
%tmp2 = and i32 %tmp1, 14
|
|
ret i32 %tmp2
|
|
}
|
|
|
|
define i32 @test_or(i32 %arg) {
|
|
; CHECK-LABEL: test_or
|
|
; CHECK-NEXT: %tmp2 = or i32 %arg, 14
|
|
; CHECK-NEXT: ret i32 %tmp2
|
|
|
|
%tmp1 = or i32 14, %arg
|
|
%tmp2 = or i32 %tmp1, 14
|
|
ret i32 %tmp2
|
|
}
|
|
|
|
define i32 @test_xor(i32 %arg) {
|
|
; CHECK-LABEL: test_xor
|
|
; CHECK-NEXT: ret i32 %arg
|
|
|
|
%tmp1 = xor i32 12, %arg
|
|
%tmp2 = xor i32 %tmp1, 12
|
|
ret i32 %tmp2
|
|
}
|