Lower the fcmp instruction for <4 x float> operands.

tests_lit/llvm2ice_tests/vector-fcmp.ll

+; This file checks support for comparing vector values with the fcmp
+; instruction.
+
+; RUN: %llvm2ice -O2 --verbose none %s | FileCheck %s
+; RUN: %llvm2ice -Om1 --verbose none %s | FileCheck %s
+; RUN: %llvm2ice -O2 --verbose none %s \
+; RUN:               | llvm-mc -arch=x86 -x86-asm-syntax=intel -filetype=obj
+; RUN: %llvm2ice -Om1 --verbose none %s \
+; RUN:               | llvm-mc -arch=x86 -x86-asm-syntax=intel -filetype=obj
+; RUN: %llvm2ice --verbose none %s | FileCheck --check-prefix=ERRORS %s
+; RUN: %llvm2iceinsts %s | %szdiff %s | FileCheck --check-prefix=DUMP %s
+; RUN: %llvm2iceinsts --pnacl %s | %szdiff %s \
+; RUN:                           | FileCheck --check-prefix=DUMP %s
+
+; Check that sext elimination occurs when the result of the comparison
+; instruction is alrady sign extended.  Sign extension to 4 x i32 uses
+; the pslld instruction.
+define <4 x i32> @sextElimination(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp oeq <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: sextElimination:
+; CHECK: cmpeqps
+; CHECK-NOT: pslld
+}
+
+define <4 x i32> @fcmpFalseVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp false <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpFalseVector:
+; CHECK: pxor
+}
+
+define <4 x i32> @fcmpOeqVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp oeq <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOeqVector:
+; CHECK: cmpeqps
+}
+
+define <4 x i32> @fcmpOgeVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp oge <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOgeVector:
+; CHECK: cmpleps
+}
+
+define <4 x i32> @fcmpOgtVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ogt <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOgtVector:
+; CHECK: cmpltps
+}
+
+define <4 x i32> @fcmpOleVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ole <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOleVector:
+; CHECK: cmpleps
+}
+
+define <4 x i32> @fcmpOltVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp olt <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOltVector:
+; CHECK: cmpltps
+}
+
+define <4 x i32> @fcmpOneVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp one <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOneVector:
+; CHECK: cmpneqps
+; CHECK: cmpordps
+; CHECK: pand
+}
+
+define <4 x i32> @fcmpOrdVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ord <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpOrdVector:
+; CHECK: cmpordps
+}
+
+define <4 x i32> @fcmpTrueVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp true <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpTrueVector:
+; CHECK: pcmpeqd
+}
+
+define <4 x i32> @fcmpUeqVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ueq <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUeqVector:
+; CHECK: cmpeqps
+; CHECK: cmpunordps
+; CHECK: por
+}
+
+define <4 x i32> @fcmpUgeVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp uge <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUgeVector:
+; CHECK: cmpnltps
+}
+
+define <4 x i32> @fcmpUgtVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ugt <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUgtVector:
+; CHECK: cmpnleps
+}
+
+define <4 x i32> @fcmpUleVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ule <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUleVector:
+; CHECK: cmpnltps
+}
+
+define <4 x i32> @fcmpUltVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp ult <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUltVector:
+; CHECK: cmpnleps
+}
+
+define <4 x i32> @fcmpUneVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp une <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUneVector:
+; CHECK: cmpneqps
+}
+
+define <4 x i32> @fcmpUnoVector(<4 x float> %a, <4 x float> %b) {
+entry:
+  %res.trunc = fcmp uno <4 x float> %a, %b
+  %res = sext <4 x i1> %res.trunc to <4 x i32>
+  ret <4 x i32> %res
+; CHECK-LABEL: fcmpUnoVector:
+; CHECK: cmpunordps
+}
+
+; ERRORS-NOT: ICE translation error
+; DUMP-NOT: SZ
+