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https://github.com/c64scene-ar/llvm-6502.git
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ef72e73da9
This matches both what we do for the non-thread case and what gcc does.
With this patch clang would match gcc's behaviour in
static __thread int a = 42;
extern __thread int b __attribute__((alias("a")));
int *f(void) { return &a; }
int *g(void) { return &b; }
if not for pr19843. Manually writing the IL does produce the same access modes.
It is also a step in the direction of fixing pr19844.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209543 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.6 KiB
LLVM
42 lines
1.6 KiB
LLVM
; RUN: llc < %s -relocation-model=pic | FileCheck %s
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; PR2137
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; ModuleID = '1.c'
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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-f80:32:32"
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target triple = "i386-pc-linux-gnu"
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%struct.__res_state = type { i32 }
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@__resp = thread_local global %struct.__res_state* @_res ; <%struct.__res_state**> [#uses=1]
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@_res = global %struct.__res_state zeroinitializer, section ".bss" ; <%struct.__res_state*> [#uses=1]
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@__libc_resp = hidden alias %struct.__res_state** @__resp ; <%struct.__res_state**> [#uses=2]
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define i32 @foo() {
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; CHECK-LABEL: foo:
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; CHECK: leal __libc_resp@TLSLD
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entry:
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%retval = alloca i32 ; <i32*> [#uses=1]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%tmp = load %struct.__res_state** @__libc_resp, align 4 ; <%struct.__res_state*> [#uses=1]
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%tmp1 = getelementptr %struct.__res_state* %tmp, i32 0, i32 0 ; <i32*> [#uses=1]
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store i32 0, i32* %tmp1, align 4
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br label %return
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return: ; preds = %entry
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%retval2 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval2
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}
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define i32 @bar() {
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; CHECK-LABEL: bar:
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; CHECK: leal __libc_resp@TLSLD
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entry:
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%retval = alloca i32 ; <i32*> [#uses=1]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%tmp = load %struct.__res_state** @__libc_resp, align 4 ; <%struct.__res_state*> [#uses=1]
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%tmp1 = getelementptr %struct.__res_state* %tmp, i32 0, i32 0 ; <i32*> [#uses=1]
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store i32 1, i32* %tmp1, align 4
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br label %return
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return: ; preds = %entry
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%retval2 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval2
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}
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