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a2e6435e48
1. Use the same value# to represent unknown values being merged into sub-registers. 2. When coalescer commute an instruction and the destination is a physical register, update its sub-registers by merging in the extended ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66610 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; RUN: llvm-as < %s | llc -mtriple=x86_64-apple-darwin
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; rdar://r6661945
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%struct.WINDOW = type { i16, i16, i16, i16, i16, i16, i16, i32, i32, i8, i8, i8, i8, i8, i8, i8, i8, i8, i32, %struct.ldat*, i16, i16, i32, i32, %struct.WINDOW*, %struct.pdat, i16, %struct.cchar_t }
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%struct.cchar_t = type { i32, [5 x i32] }
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%struct.ldat = type { %struct.cchar_t*, i16, i16, i16 }
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%struct.pdat = type { i16, i16, i16, i16, i16, i16 }
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define i32 @pnoutrefresh(%struct.WINDOW* %win, i32 %pminrow, i32 %pmincol, i32 %sminrow, i32 %smincol, i32 %smaxrow, i32 %smaxcol) nounwind optsize ssp {
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entry:
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%0 = load i16* null, align 4 ; <i16> [#uses=2]
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%1 = icmp sgt i16 0, %0 ; <i1> [#uses=1]
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br i1 %1, label %bb12, label %bb13
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bb12: ; preds = %entry
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%2 = sext i16 %0 to i32 ; <i32> [#uses=1]
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%3 = sub i32 %2, 0 ; <i32> [#uses=1]
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%4 = add i32 %3, %smaxrow ; <i32> [#uses=2]
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%5 = trunc i32 %4 to i16 ; <i16> [#uses=1]
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%6 = add i16 0, %5 ; <i16> [#uses=1]
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br label %bb13
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bb13: ; preds = %bb12, %entry
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%pmaxrow.0 = phi i16 [ %6, %bb12 ], [ 0, %entry ] ; <i16> [#uses=0]
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%smaxrow_addr.0 = phi i32 [ %4, %bb12 ], [ %smaxrow, %entry ] ; <i32> [#uses=1]
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%7 = trunc i32 %smaxrow_addr.0 to i16 ; <i16> [#uses=0]
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ret i32 0
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}
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