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author | Evan Cheng <evan.cheng@apple.com> | 2008-02-23 03:38:34 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2008-02-23 03:38:34 +0000 |
commit | 249ded3fa8884f91fded869fb6e251b8aebb0376 (patch) | |
tree | ffadae6a55002ddf90fbd09e68d738e994ba3480 /test/CodeGen | |
parent | aaa1d4265e93ade9db6ab815ed5680d8e59e3c6b (diff) | |
download | external_llvm-249ded3fa8884f91fded869fb6e251b8aebb0376.zip external_llvm-249ded3fa8884f91fded869fb6e251b8aebb0376.tar.gz external_llvm-249ded3fa8884f91fded869fb6e251b8aebb0376.tar.bz2 |
Rematerialization logic was overly conservative when it comes to loads from fixed stack slots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47529 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
-rw-r--r-- | test/CodeGen/X86/2008-02-22-ReMatBug.ll | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2008-02-22-ReMatBug.ll b/test/CodeGen/X86/2008-02-22-ReMatBug.ll new file mode 100644 index 0000000..c26c19e --- /dev/null +++ b/test/CodeGen/X86/2008-02-22-ReMatBug.ll @@ -0,0 +1,49 @@ +; RUN: llvm-as < %s | llc -march=x86 -stats |& grep {Number of re-materialization} | grep 3 +; rdar://5761454 + + %struct.quad_struct = type { i32, i32, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct* } + +define fastcc %struct.quad_struct* @MakeTree(i32 %size, i32 %center_x, i32 %center_y, i32 %lo_proc, i32 %hi_proc, %struct.quad_struct* %parent, i32 %ct, i32 %level) nounwind { +entry: + br i1 true, label %bb43.i, label %bb.i + +bb.i: ; preds = %entry + ret %struct.quad_struct* null + +bb43.i: ; preds = %entry + br i1 true, label %CheckOutside.exit40.i, label %bb11.i38.i + +bb11.i38.i: ; preds = %bb43.i + ret %struct.quad_struct* null + +CheckOutside.exit40.i: ; preds = %bb43.i + br i1 true, label %CheckOutside.exit30.i, label %bb11.i28.i + +bb11.i28.i: ; preds = %CheckOutside.exit40.i + ret %struct.quad_struct* null + +CheckOutside.exit30.i: ; preds = %CheckOutside.exit40.i + br i1 true, label %CheckOutside.exit20.i, label %bb11.i18.i + +bb11.i18.i: ; preds = %CheckOutside.exit30.i + ret %struct.quad_struct* null + +CheckOutside.exit20.i: ; preds = %CheckOutside.exit30.i + br i1 true, label %bb34, label %bb11.i8.i + +bb11.i8.i: ; preds = %CheckOutside.exit20.i + ret %struct.quad_struct* null + +bb34: ; preds = %CheckOutside.exit20.i + %tmp15.reg2mem.0 = sdiv i32 %size, 2 ; <i32> [#uses=7] + %tmp85 = sub i32 %center_y, %tmp15.reg2mem.0 ; <i32> [#uses=2] + %tmp88 = sub i32 %center_x, %tmp15.reg2mem.0 ; <i32> [#uses=2] + %tmp92 = tail call fastcc %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 %tmp88, i32 %tmp85, i32 0, i32 %hi_proc, %struct.quad_struct* null, i32 2, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0] + %tmp99 = add i32 0, %hi_proc ; <i32> [#uses=1] + %tmp100 = sdiv i32 %tmp99, 2 ; <i32> [#uses=1] + %tmp110 = tail call fastcc %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 0, i32 %tmp85, i32 0, i32 %tmp100, %struct.quad_struct* null, i32 3, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0] + %tmp122 = add i32 %tmp15.reg2mem.0, %center_y ; <i32> [#uses=2] + %tmp129 = tail call fastcc %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 0, i32 %tmp122, i32 0, i32 0, %struct.quad_struct* null, i32 1, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0] + %tmp147 = tail call fastcc %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 %tmp88, i32 %tmp122, i32 %lo_proc, i32 0, %struct.quad_struct* null, i32 0, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0] + unreachable +} |