[AVX-512] Add EVEX encoded VPCMPEQ and VPCMPGT to the load folding tables.

llvm-svn: 280581

1 files changed, 48 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/stack-folding-int-avx512vl.ll b/llvm/test/CodeGen/X86/stack-folding-int-avx512vl.ll
new file mode 100644
index 00000000000..f92f9593f13
--- /dev/null
+++ b/llvm/test/CodeGen/X86/stack-folding-int-avx512vl.ll
@@ -0,0 +1,48 @@
+; RUN: llc -O3 -disable-peephole -mtriple=x86_64-unknown-unknown -mattr=+avx512vl,+avx512bw < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-unknown"
+
+; Stack reload folding tests.
+;
+; By including a nop call with sideeffects we can force a partial register spill of the
+; relevant registers and check that the reload is correctly folded into the instruction.
+
+define i16 @stack_fold_pcmpeqb(<16 x i8> %a0, <16 x i8> %a1) {
+  ;CHECK-LABEL: stack_fold_pcmpeqb
+  ;CHECK:       vpcmpeqb {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}}, {{%k[0-7]}} {{.*#+}} 16-byte Folded Reload
+  %1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{xmm16},~{xmm17},~{xmm18},~{xmm19},~{xmm20},~{xmm21},~{xmm22},~{xmm23},~{xmm24},~{xmm25},~{xmm26},~{xmm27},~{xmm28},~{xmm29},~{xmm30},~{xmm31},~{flags}"()
+  %2 = icmp eq <16 x i8> %a0, %a1
+  %3 = bitcast <16 x i1> %2 to i16
+  ret i16 %3
+}
+
+define i8 @stack_fold_pcmpeqd(<4 x i32> %a0, <4 x i32> %a1) {
+  ;CHECK-LABEL: stack_fold_pcmpeqd
+  ;CHECK:       vpcmpeqd {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}}, {{%k[0-7]}} {{.*#+}} 16-byte Folded Reload
+  %1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{xmm16},~{xmm17},~{xmm18},~{xmm19},~{xmm20},~{xmm21},~{xmm22},~{xmm23},~{xmm24},~{xmm25},~{xmm26},~{xmm27},~{xmm28},~{xmm29},~{xmm30},~{xmm31},~{flags}"()
+  %2 = icmp eq <4 x i32> %a0, %a1
+  %3 = shufflevector <4 x i1> %2, <4 x i1> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+  %4 = bitcast <8 x i1> %3 to i8
+  ret i8 %4
+}
+
+define i8 @stack_fold_pcmpeqq(<2 x i64> %a0, <2 x i64> %a1) {
+  ;CHECK-LABEL: stack_fold_pcmpeqq
+  ;CHECK:       vpcmpeqq {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}}, {{%k[0-7]}} {{.*#+}} 16-byte Folded Reload
+  %1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{xmm16},~{xmm17},~{xmm18},~{xmm19},~{xmm20},~{xmm21},~{xmm22},~{xmm23},~{xmm24},~{xmm25},~{xmm26},~{xmm27},~{xmm28},~{xmm29},~{xmm30},~{xmm31},~{flags}"()
+  %2 = icmp eq <2 x i64> %a0, %a1
+  %3 = shufflevector <2 x i1> %2, <2 x i1> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 2, i32 3, i32 2, i32 3>
+  %4 = bitcast <8 x i1> %3 to i8
+  ret i8 %4
+}
+
+define i8 @stack_fold_pcmpeqw(<8 x i16> %a0, <8 x i16> %a1) {
+  ;CHECK-LABEL: stack_fold_pcmpeqw
+  ;CHECK:       vpcmpeqw {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}}, {{%k[0-7]}} {{.*#+}} 16-byte Folded Reload
+  %1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{xmm16},~{xmm17},~{xmm18},~{xmm19},~{xmm20},~{xmm21},~{xmm22},~{xmm23},~{xmm24},~{xmm25},~{xmm26},~{xmm27},~{xmm28},~{xmm29},~{xmm30},~{xmm31},~{flags}"()
+  %2 = icmp eq <8 x i16> %a0, %a1
+  %3 = bitcast <8 x i1> %2 to i8
+  ret i8 %3
+}
+