bitcast-di.ll
1.48 KB
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; RUN: opt -mtriple=x86_64-unknown-linux-gnu -S -debugify -codegenprepare < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-unknown-linux-gnu"
@x = external global [1 x [2 x <4 x float>]]
declare void @foo(i32)
declare void @slowpath(i32, i32*)
; Is DI maintained after sinking bitcast?
define void @test(i1 %cond, i64* %base) {
; CHECK-LABEL: @test
entry:
%addr = getelementptr inbounds i64, i64* %base, i64 5
%casted = bitcast i64* %addr to i32*
br i1 %cond, label %if.then, label %fallthrough
if.then:
; CHECK-LABEL: if.then:
; CHECK: bitcast i64* %addr to i32*, !dbg ![[castLoc:[0-9]+]]
%v1 = load i32, i32* %casted, align 4
call void @foo(i32 %v1)
%cmp = icmp eq i32 %v1, 0
br i1 %cmp, label %rare.1, label %fallthrough
fallthrough:
ret void
rare.1:
; CHECK-LABEL: rare.1:
; CHECK: bitcast i64* %addr to i32*, !dbg ![[castLoc]]
call void @slowpath(i32 %v1, i32* %casted) ;; NOT COLD
br label %fallthrough
}
; Is DI maitained when a GEP with all zero indices gets converted to bitcast?
define void @test2() {
; CHECK-LABEL: @test2
load.i145:
; CHECK: bitcast [1 x [2 x <4 x float>]]* @x to [2 x <4 x float>]*, !dbg ![[castLoc2:[0-9]+]]
%x_offset = getelementptr [1 x [2 x <4 x float>]], [1 x [2 x <4 x float>]]* @x, i32 0, i64 0
ret void
}
; CHECK: ![[castLoc]] = !DILocation(line: 2
; CHECK: ![[castLoc2]] = !DILocation(line: 11