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[x86] add tests for missed umin/umax 

This is actually a deficiency in ValueTracking's matchSelectPattern(),
but a codegen test is the simplest way to expose the bug.

llvm-svn: 285429
This commit is contained in:
Sanjay Patel 2016-10-28 19:08:20 +00:00
parent fd1892d7a1
commit 03a585e882
1 changed files with 59 additions and 0 deletions
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59
llvm/test/CodeGen/X86/vec_umin_umax.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s
; FIXME: These are unsigned min/max ops.
define <4 x i32> @umax_vec1(<4 x i32> %x) {
; CHECK-LABEL: umax_vec1:
; CHECK: # BB#0:
; CHECK-NEXT: vpxor %xmm1, %xmm1, %xmm1
; CHECK-NEXT: vpcmpgtd %xmm0, %xmm1, %xmm1
; CHECK-NEXT: vmovaps {{.*#+}} xmm2 = [2147483647,2147483647,2147483647,2147483647]
; CHECK-NEXT: vblendvps %xmm1, %xmm0, %xmm2, %xmm0
; CHECK-NEXT: retq
;
%cmp = icmp slt <4 x i32> %x, zeroinitializer
%sel = select <4 x i1> %cmp, <4 x i32> %x, <4 x i32> <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>
ret <4 x i32> %sel
}
define <4 x i32> @umax_vec2(<4 x i32> %x) {
; CHECK-LABEL: umax_vec2:
; CHECK: # BB#0:
; CHECK-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; CHECK-NEXT: vpcmpgtd %xmm1, %xmm0, %xmm1
; CHECK-NEXT: vblendvps %xmm1, {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
;
%cmp = icmp sgt <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
%sel = select <4 x i1> %cmp, <4 x i32> <i32 2147483648, i32 2147483648, i32 2147483648, i32 2147483648>, <4 x i32> %x
ret <4 x i32> %sel
}
define <4 x i32> @umin_vec1(<4 x i32> %x) {
; CHECK-LABEL: umin_vec1:
; CHECK: # BB#0:
; CHECK-NEXT: vpxor %xmm1, %xmm1, %xmm1
; CHECK-NEXT: vpcmpgtd %xmm0, %xmm1, %xmm1
; CHECK-NEXT: vblendvps %xmm1, {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
;
%cmp = icmp slt <4 x i32> %x, zeroinitializer
%sel = select <4 x i1> %cmp, <4 x i32> <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>, <4 x i32> %x
ret <4 x i32> %sel
}
define <4 x i32> @umin_vec2(<4 x i32> %x) {
; CHECK-LABEL: umin_vec2:
; CHECK: # BB#0:
; CHECK-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; CHECK-NEXT: vpcmpgtd %xmm1, %xmm0, %xmm1
; CHECK-NEXT: vmovaps {{.*#+}} xmm2 = [2147483648,2147483648,2147483648,2147483648]
; CHECK-NEXT: vblendvps %xmm1, %xmm0, %xmm2, %xmm0
; CHECK-NEXT: retq
;
%cmp = icmp sgt <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
%sel = select <4 x i1> %cmp, <4 x i32> %x, <4 x i32> <i32 2147483648, i32 2147483648, i32 2147483648, i32 2147483648>
ret <4 x i32> %sel
}