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[InstCombine] add tests for icmp with bswapped operands; NFC 

llvm-svn: 306563
This commit is contained in:
Sanjay Patel 2017-06-28 16:56:45 +00:00
parent 22033efc29
commit 1a132d27c6
1 changed files with 30 additions and 0 deletions
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30
llvm/test/Transforms/InstCombine/icmp.ll
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@ -2980,3 +2980,33 @@ define <2 x i1> @eq_mul_constants_with_tz_splat(<2 x i32> %x, <2 x i32> %y) {
ret <2 x i1> %C
}
declare i32 @llvm.bswap.i32(i32)
define i1 @bswap_ne(i32 %x, i32 %y) {
; CHECK-LABEL: @bswap_ne(
; CHECK-NEXT: [[SWAPX:%.*]] = call i32 @llvm.bswap.i32(i32 %x)
; CHECK-NEXT: [[SWAPY:%.*]] = call i32 @llvm.bswap.i32(i32 %y)
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[SWAPX]], [[SWAPY]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%swapx = call i32 @llvm.bswap.i32(i32 %x)
%swapy = call i32 @llvm.bswap.i32(i32 %y)
%cmp = icmp ne i32 %swapx, %swapy
ret i1 %cmp
}
declare <8 x i16> @llvm.bswap.v8i16(<8 x i16>)
define <8 x i1> @bswap_vec_eq(<8 x i16> %x, <8 x i16> %y) {
; CHECK-LABEL: @bswap_vec_eq(
; CHECK-NEXT: [[SWAPX:%.*]] = call <8 x i16> @llvm.bswap.v8i16(<8 x i16> %x)
; CHECK-NEXT: [[SWAPY:%.*]] = call <8 x i16> @llvm.bswap.v8i16(<8 x i16> %y)
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <8 x i16> [[SWAPX]], [[SWAPY]]
; CHECK-NEXT: ret <8 x i1> [[CMP]]
;
%swapx = call <8 x i16> @llvm.bswap.v8i16(<8 x i16> %x)
%swapy = call <8 x i16> @llvm.bswap.v8i16(<8 x i16> %y)
%cmp = icmp eq <8 x i16> %swapx, %swapy
ret <8 x i1> %cmp
}