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https://github.com/c64scene-ar/llvm-6502.git
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70 lines
2.3 KiB
LLVM
70 lines
2.3 KiB
LLVM
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; RUN: llvm-as < %s | llc | grep {bl L_exact_log2.stub}
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; PR4482
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "powerpc-apple-darwin8"
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define i32 @foo(i64 %x) nounwind {
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entry:
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%x_addr = alloca i64 ; <i64*> [#uses=2]
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%retval = alloca i32 ; <i32*> [#uses=2]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i64 %x, i64* %x_addr
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%1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%2 = call i32 @exact_log2(i64 %1) nounwind ; <i32> [#uses=1]
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store i32 %2, i32* %0, align 4
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%3 = load i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %3, i32* %retval, align 4
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br label %return
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return: ; preds = %entry
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%retval1 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval1
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}
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define available_externally i32 @exact_log2(i64 %x) nounwind {
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entry:
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%x_addr = alloca i64 ; <i64*> [#uses=6]
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%retval = alloca i32 ; <i32*> [#uses=2]
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%iftmp.0 = alloca i32 ; <i32*> [#uses=3]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i64 %x, i64* %x_addr
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%1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%2 = sub i64 0, %1 ; <i64> [#uses=1]
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%3 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%4 = and i64 %2, %3 ; <i64> [#uses=1]
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%5 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%6 = icmp ne i64 %4, %5 ; <i1> [#uses=1]
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br i1 %6, label %bb2, label %bb
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bb: ; preds = %entry
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%7 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%8 = icmp eq i64 %7, 0 ; <i1> [#uses=1]
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br i1 %8, label %bb2, label %bb1
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bb1: ; preds = %bb
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%9 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
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%10 = call i64 @llvm.cttz.i64(i64 %9) ; <i64> [#uses=1]
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%11 = trunc i64 %10 to i32 ; <i32> [#uses=1]
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store i32 %11, i32* %iftmp.0, align 4
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br label %bb3
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bb2: ; preds = %bb, %entry
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store i32 -1, i32* %iftmp.0, align 4
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br label %bb3
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bb3: ; preds = %bb2, %bb1
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%12 = load i32* %iftmp.0, align 4 ; <i32> [#uses=1]
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store i32 %12, i32* %0, align 4
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%13 = load i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %13, i32* %retval, align 4
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br label %return
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return: ; preds = %bb3
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%retval4 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval4
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}
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declare i64 @llvm.cttz.i64(i64) nounwind readnone
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