1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -instcombine -S | FileCheck %s 3 4define i32 @test_srem_canonicalize_op0(i32 %x, i32 %y) { 5; CHECK-LABEL: @test_srem_canonicalize_op0( 6; CHECK-NEXT: [[TMP1:%.*]] = srem i32 [[X:%.*]], [[Y:%.*]] 7; CHECK-NEXT: [[SREM:%.*]] = sub nsw i32 0, [[TMP1]] 8; CHECK-NEXT: ret i32 [[SREM]] 9; 10 %neg = sub nsw i32 0, %x 11 %srem = srem i32 %neg, %y 12 ret i32 %srem 13} 14 15; (X srem -Y) is not equal to -(X srem Y), don't canonicalize. 16define i32 @test_srem_canonicalize_op1(i32 %x, i32 %z) { 17; CHECK-LABEL: @test_srem_canonicalize_op1( 18; CHECK-NEXT: [[Y:%.*]] = mul i32 [[Z:%.*]], 3 19; CHECK-NEXT: [[NEG:%.*]] = sub nsw i32 0, [[X:%.*]] 20; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[Y]], [[NEG]] 21; CHECK-NEXT: ret i32 [[SREM]] 22; 23 %y = mul i32 %z, 3 24 %neg = sub nsw i32 0, %x 25 %srem = srem i32 %y, %neg 26 ret i32 %srem 27} 28 29define i32 @test_srem_canonicalize_nonsw(i32 %x, i32 %y) { 30; CHECK-LABEL: @test_srem_canonicalize_nonsw( 31; CHECK-NEXT: [[NEG:%.*]] = sub i32 0, [[X:%.*]] 32; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[NEG]], [[Y:%.*]] 33; CHECK-NEXT: ret i32 [[SREM]] 34; 35 %neg = sub i32 0, %x 36 %srem = srem i32 %neg, %y 37 ret i32 %srem 38} 39 40define <2 x i32> @test_srem_canonicalize_vec(<2 x i32> %x, <2 x i32> %y) { 41; CHECK-LABEL: @test_srem_canonicalize_vec( 42; CHECK-NEXT: [[TMP1:%.*]] = srem <2 x i32> [[X:%.*]], [[Y:%.*]] 43; CHECK-NEXT: [[SREM:%.*]] = sub nsw <2 x i32> zeroinitializer, [[TMP1]] 44; CHECK-NEXT: ret <2 x i32> [[SREM]] 45; 46 %neg = sub nsw <2 x i32> <i32 0, i32 0>, %x 47 %srem = srem <2 x i32> %neg, %y 48 ret <2 x i32> %srem 49} 50 51define i32 @test_srem_canonicalize_multiple_uses(i32 %x, i32 %y) { 52; CHECK-LABEL: @test_srem_canonicalize_multiple_uses( 53; CHECK-NEXT: [[NEG:%.*]] = sub nsw i32 0, [[X:%.*]] 54; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[NEG]], [[Y:%.*]] 55; CHECK-NEXT: [[SREM2:%.*]] = srem i32 [[SREM]], [[NEG]] 56; CHECK-NEXT: ret i32 [[SREM2]] 57; 58 %neg = sub nsw i32 0, %x 59 %srem = srem i32 %neg, %y 60 %srem2 = srem i32 %srem, %neg 61 ret i32 %srem2 62} 63 64