Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/InstCombine/fpextend_x86.ll

@@ -0,0 +1,57 @@
+; RUN: opt < %s -instcombine -mtriple=x86_64-apple-macosx -S | FileCheck %s
+target triple = "x86_64-apple-macosx"
+
+define double @test1(double %a, double %b) nounwind {
+  %wa = fpext double %a to x86_fp80
+  %wb = fpext double %b to x86_fp80
+  %wr = fadd x86_fp80 %wa, %wb
+  %r = fptrunc x86_fp80 %wr to double
+  ret double %r
+; CHECK: test1
+; CHECK: fadd x86_fp80
+; CHECK: ret
+}
+
+define double @test2(double %a, double %b) nounwind {
+  %wa = fpext double %a to x86_fp80
+  %wb = fpext double %b to x86_fp80
+  %wr = fsub x86_fp80 %wa, %wb
+  %r = fptrunc x86_fp80 %wr to double
+  ret double %r
+; CHECK: test2
+; CHECK: fsub x86_fp80
+; CHECK: ret
+}
+
+define double @test3(double %a, double %b) nounwind {
+  %wa = fpext double %a to x86_fp80
+  %wb = fpext double %b to x86_fp80
+  %wr = fmul x86_fp80 %wa, %wb
+  %r = fptrunc x86_fp80 %wr to double
+  ret double %r
+; CHECK: test3
+; CHECK: fmul x86_fp80
+; CHECK: ret
+}
+
+define double @test4(double %a, half %b) nounwind {
+  %wa = fpext double %a to x86_fp80
+  %wb = fpext half %b to x86_fp80
+  %wr = fmul x86_fp80 %wa, %wb
+  %r = fptrunc x86_fp80 %wr to double
+  ret double %r
+; CHECK: test4
+; CHECK: fmul double
+; CHECK: ret
+}
+
+define double @test5(double %a, double %b) nounwind {
+  %wa = fpext double %a to x86_fp80
+  %wb = fpext double %b to x86_fp80
+  %wr = fdiv x86_fp80 %wa, %wb
+  %r = fptrunc x86_fp80 %wr to double
+  ret double %r
+; CHECK: test5
+; CHECK: fdiv x86_fp80
+; CHECK: ret
+}