[PATCH] D24231: [SimplifyCFG] Add test for sinking inline asm in if/else

Oliver Stannard via llvm-commits llvm-commits at lists.llvm.org
Mon Sep 5 06:57:45 PDT 2016


This revision was automatically updated to reflect the committed changes.
Closed by commit rL280660: [SimplifyCFG] Add test for sinking inline asm in if/else (authored by olista01).

Changed prior to commit:
  https://reviews.llvm.org/D24231?vs=70321&id=70326#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D24231

Files:
  llvm/trunk/test/Transforms/SimplifyCFG/inline-asm-sink.ll

Index: llvm/trunk/test/Transforms/SimplifyCFG/inline-asm-sink.ll
===================================================================
--- llvm/trunk/test/Transforms/SimplifyCFG/inline-asm-sink.ll
+++ llvm/trunk/test/Transforms/SimplifyCFG/inline-asm-sink.ll
@@ -0,0 +1,29 @@
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+define i32 @test(i32 %x) {
+; CHECK-LABEL: @test
+entry:
+  %y = alloca i32, align 4
+  %tobool = icmp ne i32 %x, 0
+  br i1 %tobool, label %if.then, label %if.else
+
+if.then:
+; CHECK-LABEL: if.then:
+; CHECK: [[ASM1:%.*]] = call i32 asm "mov $0, #1", "=r"()
+  %tmp1 = call i32 asm "mov $0, #1", "=r"() nounwind readnone
+  store i32 %tmp1, i32* %y, align 4
+  br label %if.end
+
+if.else:
+; CHECK-LABEL: if.else:
+; CHECK: [[ASM2:%.*]] = call i32 asm "mov $0, #2", "=r"()
+  %tmp2 = call i32 asm "mov $0, #2", "=r"() nounwind readnone
+  store i32 %tmp2, i32* %y, align 4
+  br label %if.end
+
+if.end:
+; CHECK-LABEL: if.end:
+; CHECK: {{%.*}} = phi i32 [ [[ASM2]], %if.else ], [ [[ASM1]], %if.then ]
+  %tmp3 = load i32, i32* %y, align 4
+  ret i32 %tmp3
+}


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