diff options
| -rw-r--r-- | lib/Target/X86/X86FastISel.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/fast-isel-mem.ll | 12 | ||||
| -rw-r--r-- | test/CodeGen/X86/fast-isel.ll | 8 |
3 files changed, 14 insertions, 8 deletions
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp index 9b784b4449..38aa994a25 100644 --- a/lib/Target/X86/X86FastISel.cpp +++ b/lib/Target/X86/X86FastISel.cpp @@ -71,6 +71,8 @@ bool X86FastISel::X86SelectConstAddr(Value *V, X86AddressMode AM; AM.GV = GV; addFullAddress(BuildMI(MBB, TII.get(Opc), Op0), AM); + // Prevent loading GV stub multiple times in same MBB. + LocalValueMap[V] = Op0; } return true; } diff --git a/test/CodeGen/X86/fast-isel-mem.ll b/test/CodeGen/X86/fast-isel-mem.ll new file mode 100644 index 0000000000..81af0ab5a8 --- /dev/null +++ b/test/CodeGen/X86/fast-isel-mem.ll @@ -0,0 +1,12 @@ +; RUN: llvm-as < %s | llc -fast-isel -mtriple=i386-apple-darwin -mattr=sse2 | \ +; RUN: grep mov | grep lazy_ptr | count 1 + +@src = external global i32 + +define i32 @loadgv() nounwind { +entry: + %0 = load i32* @src, align 4 + %1 = load i32* @src, align 4 + %2 = add i32 %0, %1 + ret i32 %2 +} diff --git a/test/CodeGen/X86/fast-isel.ll b/test/CodeGen/X86/fast-isel.ll index 10b2e1ee42..9910629211 100644 --- a/test/CodeGen/X86/fast-isel.ll +++ b/test/CodeGen/X86/fast-isel.ll @@ -47,11 +47,3 @@ entry: %tmp2 = bitcast i32 0 to i32 ret i32 %tmp2 } - -@src = external global i32 - -define i32 @loadgv() nounwind { -entry: - %0 = load i32* @src, align 4 - ret i32 %0 -} |