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Fix codegen for references to available_externally symbols. This fixes

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PR4482.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74613 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-07-01 16:53:44 +00:00
parent 4127ccdb8d
commit 4fb75e5425
2 changed files with 77 additions and 5 deletions
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69
test/CodeGen/PowerPC/available-externally.ll Normal file
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@@ -0,0 +1,69 @@
; RUN: llvm-as < %s | llc | grep {bl L_exact_log2.stub}
; PR4482
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"
target triple = "powerpc-apple-darwin8"
define i32 @foo(i64 %x) nounwind {
entry:
%x_addr = alloca i64 ; <i64*> [#uses=2]
%retval = alloca i32 ; <i32*> [#uses=2]
%0 = alloca i32 ; <i32*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store i64 %x, i64* %x_addr
%1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%2 = call i32 @exact_log2(i64 %1) nounwind ; <i32> [#uses=1]
store i32 %2, i32* %0, align 4
%3 = load i32* %0, align 4 ; <i32> [#uses=1]
store i32 %3, i32* %retval, align 4
br label %return
return: ; preds = %entry
%retval1 = load i32* %retval ; <i32> [#uses=1]
ret i32 %retval1
}
define available_externally i32 @exact_log2(i64 %x) nounwind {
entry:
%x_addr = alloca i64 ; <i64*> [#uses=6]
%retval = alloca i32 ; <i32*> [#uses=2]
%iftmp.0 = alloca i32 ; <i32*> [#uses=3]
%0 = alloca i32 ; <i32*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store i64 %x, i64* %x_addr
%1 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%2 = sub i64 0, %1 ; <i64> [#uses=1]
%3 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%4 = and i64 %2, %3 ; <i64> [#uses=1]
%5 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%6 = icmp ne i64 %4, %5 ; <i1> [#uses=1]
br i1 %6, label %bb2, label %bb
bb: ; preds = %entry
%7 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%8 = icmp eq i64 %7, 0 ; <i1> [#uses=1]
br i1 %8, label %bb2, label %bb1
bb1: ; preds = %bb
%9 = load i64* %x_addr, align 8 ; <i64> [#uses=1]
%10 = call i64 @llvm.cttz.i64(i64 %9) ; <i64> [#uses=1]
%11 = trunc i64 %10 to i32 ; <i32> [#uses=1]
store i32 %11, i32* %iftmp.0, align 4
br label %bb3
bb2: ; preds = %bb, %entry
store i32 -1, i32* %iftmp.0, align 4
br label %bb3
bb3: ; preds = %bb2, %bb1
%12 = load i32* %iftmp.0, align 4 ; <i32> [#uses=1]
store i32 %12, i32* %0, align 4
%13 = load i32* %0, align 4 ; <i32> [#uses=1]
store i32 %13, i32* %retval, align 4
br label %return
return: ; preds = %bb3
%retval4 = load i32* %retval ; <i32> [#uses=1]
ret i32 %retval4
}
declare i64 @llvm.cttz.i64(i64) nounwind readnone