1 ; RUN: llvm-as < %s | llc | grep {bl L_exact_log2.stub}
3 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"
4 target triple = "powerpc-apple-darwin8"
6 define i32 @foo(i64 %x) nounwind {
8 %x_addr = alloca i64 ; <i64*> [#uses=2]
9 %retval = alloca i32 ; <i32*> [#uses=2]
10 %0 = alloca i32 ; <i32*> [#uses=2]
11 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
12 store i64 %x, i64* %x_addr
13 %1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
14 %2 = call i32 @exact_log2(i64 %1) nounwind ; <i32> [#uses=1]
15 store i32 %2, i32* %0, align 4
16 %3 = load i32* %0, align 4 ; <i32> [#uses=1]
17 store i32 %3, i32* %retval, align 4
20 return: ; preds = %entry
21 %retval1 = load i32* %retval ; <i32> [#uses=1]
25 define available_externally i32 @exact_log2(i64 %x) nounwind {
27 %x_addr = alloca i64 ; <i64*> [#uses=6]
28 %retval = alloca i32 ; <i32*> [#uses=2]
29 %iftmp.0 = alloca i32 ; <i32*> [#uses=3]
30 %0 = alloca i32 ; <i32*> [#uses=2]
31 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
32 store i64 %x, i64* %x_addr
33 %1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
34 %2 = sub i64 0, %1 ; <i64> [#uses=1]
35 %3 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
36 %4 = and i64 %2, %3 ; <i64> [#uses=1]
37 %5 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
38 %6 = icmp ne i64 %4, %5 ; <i1> [#uses=1]
39 br i1 %6, label %bb2, label %bb
42 %7 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
43 %8 = icmp eq i64 %7, 0 ; <i1> [#uses=1]
44 br i1 %8, label %bb2, label %bb1
47 %9 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
48 %10 = call i64 @llvm.cttz.i64(i64 %9) ; <i64> [#uses=1]
49 %11 = trunc i64 %10 to i32 ; <i32> [#uses=1]
50 store i32 %11, i32* %iftmp.0, align 4
53 bb2: ; preds = %bb, %entry
54 store i32 -1, i32* %iftmp.0, align 4
57 bb3: ; preds = %bb2, %bb1
58 %12 = load i32* %iftmp.0, align 4 ; <i32> [#uses=1]
59 store i32 %12, i32* %0, align 4
60 %13 = load i32* %0, align 4 ; <i32> [#uses=1]
61 store i32 %13, i32* %retval, align 4
64 return: ; preds = %bb3
65 %retval4 = load i32* %retval ; <i32> [#uses=1]
69 declare i64 @llvm.cttz.i64(i64) nounwind readnone