Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/CodeGen/X86/fabs.ll

@@ -0,0 +1,54 @@
+; Make sure this testcase codegens to the fabs instruction, not a call to fabsf
+; RUN: llc < %s -mtriple=i686-apple-macosx -mattr=-sse2,-sse3,-sse | FileCheck %s
+; RUN: llc < %s -mtriple=i686-apple-macosx -mattr=-sse,-sse2,-sse3 -enable-unsafe-fp-math -enable-no-nans-fp-math | FileCheck %s --check-prefix=UNSAFE
+; RUN: llc < %s -mtriple=x86_64-apple-macosx -O0 | FileCheck %s --check-prefix=NOOPT
+
+declare float @fabsf(float)
+
+declare x86_fp80 @fabsl(x86_fp80)
+
+; CHECK-LABEL:  test1:
+; UNSAFE-LABEL: test1:
+; NOOPT-LABEL:  test1:
+define float @test1(float %X) {
+        %Y = call float @fabsf(float %X) readnone
+        ret float %Y
+}
+; CHECK:  {{^[ \t]+fabs$}}
+; UNSAFE: {{^[ \t]+fabs$}}
+
+; CHECK-NOT:  fabs
+; UNSAFE-NOT: fabs
+; NOOPT-NOT:  fabsf
+
+; CHECK-LABEL:  test2:
+; UNSAFE-LABEL: test2:
+; NOOPT-LABEL:  test2:
+define double @test2(double %X) {
+        %Y = fcmp oge double %X, -0.0
+        %Z = fsub double -0.0, %X
+        %Q = select i1 %Y, double %X, double %Z
+        ret double %Q
+}
+; fabs is not used here.
+; CHECK-NOT:  fabs
+; NOOPT-NOT:  fabs
+
+; UNSAFE: {{^[ \t]+fabs$}}
+
+; UNSAFE-NOT: fabs
+
+; CHECK-LABEL:  test3:
+; UNSAFE-LABEL: test3:
+; NOOPT-LABEL:  test3:
+define x86_fp80 @test3(x86_fp80 %X) {
+        %Y = call x86_fp80 @fabsl(x86_fp80 %X) readnone
+        ret x86_fp80 %Y
+}
+; CHECK:  {{^[ \t]+fabs$}}
+; UNSAFE: {{^[ \t]+fabs$}}
+; NOOPT:  {{^[ \t]+fabs$}}
+
+; CHECK-NOT:  fabs
+; UNSAFE-NOT: fabs
+; NOOPT-NOT:  fabs