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-rw-r--r--llvm/lib/Target/X86/X86ISelLowering.cpp1
-rw-r--r--llvm/test/CodeGen/X86/vector-trunc-packus.ll61
-rw-r--r--llvm/test/CodeGen/X86/vector-trunc-ssat.ll56
3 files changed, 17 insertions, 101 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index c7d90ddfc9a..8d538198aef 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -39871,6 +39871,7 @@ static SDValue combineTruncateWithSat(SDValue In, EVT VT, const SDLoc &DL,
// registers, we should go ahead and use the pack instructions if possible.
bool PreferAVX512 = ((Subtarget.hasAVX512() && InSVT == MVT::i32) ||
(Subtarget.hasBWI() && InSVT == MVT::i16)) &&
+ (InVT.getSizeInBits() > 128) &&
(Subtarget.hasVLX() || InVT.getSizeInBits() > 256) &&
!(!Subtarget.useAVX512Regs() && VT.getSizeInBits() >= 256);
diff --git a/llvm/test/CodeGen/X86/vector-trunc-packus.ll b/llvm/test/CodeGen/X86/vector-trunc-packus.ll
index 2f433d8b8f7..a95a81f435e 100644
--- a/llvm/test/CodeGen/X86/vector-trunc-packus.ll
+++ b/llvm/test/CodeGen/X86/vector-trunc-packus.ll
@@ -2392,37 +2392,13 @@ define <4 x i16> @trunc_packus_v4i32_v4i16(<4 x i32> %a0) {
; AVX-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
;
-; AVX512F-LABEL: trunc_packus_v4i32_v4i16:
-; AVX512F: # %bb.0:
-; AVX512F-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
-; AVX512F-NEXT: retq
-;
-; AVX512VL-LABEL: trunc_packus_v4i32_v4i16:
-; AVX512VL: # %bb.0:
-; AVX512VL-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512VL-NEXT: vpxor %xmm1, %xmm1, %xmm1
-; AVX512VL-NEXT: vpmaxsd %xmm1, %xmm0, %xmm0
-; AVX512VL-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
-; AVX512VL-NEXT: retq
-;
-; AVX512BW-LABEL: trunc_packus_v4i32_v4i16:
-; AVX512BW: # %bb.0:
-; AVX512BW-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
-; AVX512BW-NEXT: retq
-;
-; AVX512BWVL-LABEL: trunc_packus_v4i32_v4i16:
-; AVX512BWVL: # %bb.0:
-; AVX512BWVL-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpxor %xmm1, %xmm1, %xmm1
-; AVX512BWVL-NEXT: vpmaxsd %xmm1, %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
-; AVX512BWVL-NEXT: retq
+; AVX512-LABEL: trunc_packus_v4i32_v4i16:
+; AVX512: # %bb.0:
+; AVX512-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
+; AVX512-NEXT: retq
;
; SKX-LABEL: trunc_packus_v4i32_v4i16:
; SKX: # %bb.0:
-; SKX-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; SKX-NEXT: vpxor %xmm1, %xmm1, %xmm1
-; SKX-NEXT: vpmaxsd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vpackusdw %xmm0, %xmm0, %xmm0
; SKX-NEXT: retq
%1 = icmp slt <4 x i32> %a0, <i32 65535, i32 65535, i32 65535, i32 65535>
@@ -5731,34 +5707,13 @@ define <8 x i8> @trunc_packus_v8i16_v8i8(<8 x i16> %a0) {
; AVX-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
;
-; AVX512F-LABEL: trunc_packus_v8i16_v8i8:
-; AVX512F: # %bb.0:
-; AVX512F-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
-; AVX512F-NEXT: retq
-;
-; AVX512VL-LABEL: trunc_packus_v8i16_v8i8:
-; AVX512VL: # %bb.0:
-; AVX512VL-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
-; AVX512VL-NEXT: retq
-;
-; AVX512BW-LABEL: trunc_packus_v8i16_v8i8:
-; AVX512BW: # %bb.0:
-; AVX512BW-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
-; AVX512BW-NEXT: retq
-;
-; AVX512BWVL-LABEL: trunc_packus_v8i16_v8i8:
-; AVX512BWVL: # %bb.0:
-; AVX512BWVL-NEXT: vpminsw {{.*}}(%rip), %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpxor %xmm1, %xmm1, %xmm1
-; AVX512BWVL-NEXT: vpmaxsw %xmm1, %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
-; AVX512BWVL-NEXT: retq
+; AVX512-LABEL: trunc_packus_v8i16_v8i8:
+; AVX512: # %bb.0:
+; AVX512-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
+; AVX512-NEXT: retq
;
; SKX-LABEL: trunc_packus_v8i16_v8i8:
; SKX: # %bb.0:
-; SKX-NEXT: vpminsw {{.*}}(%rip), %xmm0, %xmm0
-; SKX-NEXT: vpxor %xmm1, %xmm1, %xmm1
-; SKX-NEXT: vpmaxsw %xmm1, %xmm0, %xmm0
; SKX-NEXT: vpackuswb %xmm0, %xmm0, %xmm0
; SKX-NEXT: retq
%1 = icmp slt <8 x i16> %a0, <i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255>
diff --git a/llvm/test/CodeGen/X86/vector-trunc-ssat.ll b/llvm/test/CodeGen/X86/vector-trunc-ssat.ll
index d15559e4031..d9d9c367cea 100644
--- a/llvm/test/CodeGen/X86/vector-trunc-ssat.ll
+++ b/llvm/test/CodeGen/X86/vector-trunc-ssat.ll
@@ -2380,34 +2380,13 @@ define <4 x i16> @trunc_ssat_v4i32_v4i16(<4 x i32> %a0) {
; AVX-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
;
-; AVX512F-LABEL: trunc_ssat_v4i32_v4i16:
-; AVX512F: # %bb.0:
-; AVX512F-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
-; AVX512F-NEXT: retq
-;
-; AVX512VL-LABEL: trunc_ssat_v4i32_v4i16:
-; AVX512VL: # %bb.0:
-; AVX512VL-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512VL-NEXT: vpmaxsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512VL-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
-; AVX512VL-NEXT: retq
-;
-; AVX512BW-LABEL: trunc_ssat_v4i32_v4i16:
-; AVX512BW: # %bb.0:
-; AVX512BW-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
-; AVX512BW-NEXT: retq
-;
-; AVX512BWVL-LABEL: trunc_ssat_v4i32_v4i16:
-; AVX512BWVL: # %bb.0:
-; AVX512BWVL-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpmaxsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
-; AVX512BWVL-NEXT: retq
+; AVX512-LABEL: trunc_ssat_v4i32_v4i16:
+; AVX512: # %bb.0:
+; AVX512-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
+; AVX512-NEXT: retq
;
; SKX-LABEL: trunc_ssat_v4i32_v4i16:
; SKX: # %bb.0:
-; SKX-NEXT: vpminsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
-; SKX-NEXT: vpmaxsd {{.*}}(%rip){1to4}, %xmm0, %xmm0
; SKX-NEXT: vpackssdw %xmm0, %xmm0, %xmm0
; SKX-NEXT: retq
%1 = icmp slt <4 x i32> %a0, <i32 32767, i32 32767, i32 32767, i32 32767>
@@ -5620,32 +5599,13 @@ define <8 x i8> @trunc_ssat_v8i16_v8i8(<8 x i16> %a0) {
; AVX-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
;
-; AVX512F-LABEL: trunc_ssat_v8i16_v8i8:
-; AVX512F: # %bb.0:
-; AVX512F-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
-; AVX512F-NEXT: retq
-;
-; AVX512VL-LABEL: trunc_ssat_v8i16_v8i8:
-; AVX512VL: # %bb.0:
-; AVX512VL-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
-; AVX512VL-NEXT: retq
-;
-; AVX512BW-LABEL: trunc_ssat_v8i16_v8i8:
-; AVX512BW: # %bb.0:
-; AVX512BW-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
-; AVX512BW-NEXT: retq
-;
-; AVX512BWVL-LABEL: trunc_ssat_v8i16_v8i8:
-; AVX512BWVL: # %bb.0:
-; AVX512BWVL-NEXT: vpminsw {{.*}}(%rip), %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpmaxsw {{.*}}(%rip), %xmm0, %xmm0
-; AVX512BWVL-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
-; AVX512BWVL-NEXT: retq
+; AVX512-LABEL: trunc_ssat_v8i16_v8i8:
+; AVX512: # %bb.0:
+; AVX512-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
+; AVX512-NEXT: retq
;
; SKX-LABEL: trunc_ssat_v8i16_v8i8:
; SKX: # %bb.0:
-; SKX-NEXT: vpminsw {{.*}}(%rip), %xmm0, %xmm0
-; SKX-NEXT: vpmaxsw {{.*}}(%rip), %xmm0, %xmm0
; SKX-NEXT: vpacksswb %xmm0, %xmm0, %xmm0
; SKX-NEXT: retq
%1 = icmp slt <8 x i16> %a0, <i16 127, i16 127, i16 127, i16 127, i16 127, i16 127, i16 127, i16 127>
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