56 lines
2.4 KiB
LLVM
56 lines
2.4 KiB
LLVM
; RUN: llc %s -o - -verify-machineinstrs | FileCheck %s
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target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
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target triple = "thumbv7-unknown-unknown"
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%struct.ref_s = type { %union.v, i16, i16 }
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%union.v = type { i32 }
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%struct.gs_color_s = type { i16, i16, i16, i16, i8, i8 }
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; In this case, the if converter was cloning the return instruction so that we had
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; r2<def> = ...
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; return [pred] r2<dead,def>
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; ldr <r2, kill>
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; return
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; The problem here was that the dead def on the first return was making the machine verifier
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; think that the load read from an undefined register. We need to remove the dead flag from
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; the return, and also add an implicit use of the prior value of r2.
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; CHECK: ldrh
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; Function Attrs: minsize nounwind optsize ssp
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define i32 @test(%struct.ref_s* %pref1, %struct.ref_s* %pref2, %struct.gs_color_s** %tmp152) #0 {
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bb:
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%nref = alloca %struct.ref_s, align 4
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%tmp46 = call %struct.ref_s* @name_string_ref(%struct.ref_s* %pref1, %struct.ref_s* %nref) #2
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%tmp153 = load %struct.gs_color_s*, %struct.gs_color_s** %tmp152, align 4
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%tmp154 = bitcast %struct.ref_s* %pref2 to %struct.gs_color_s**
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%tmp155 = load %struct.gs_color_s*, %struct.gs_color_s** %tmp154, align 4
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%tmp162 = getelementptr inbounds %struct.gs_color_s, %struct.gs_color_s* %tmp153, i32 0, i32 1
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%tmp163 = load i16, i16* %tmp162, align 2
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%tmp164 = getelementptr inbounds %struct.gs_color_s, %struct.gs_color_s* %tmp155, i32 0, i32 1
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%tmp165 = load i16, i16* %tmp164, align 2
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%tmp166 = icmp eq i16 %tmp163, %tmp165
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br i1 %tmp166, label %bb167, label %bb173
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bb167: ; preds = %bb
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%tmp168 = getelementptr inbounds %struct.gs_color_s, %struct.gs_color_s* %tmp153, i32 0, i32 2
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%tmp169 = load i16, i16* %tmp168, align 2
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%tmp170 = getelementptr inbounds %struct.gs_color_s, %struct.gs_color_s* %tmp155, i32 0, i32 2
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%tmp171 = load i16, i16* %tmp170, align 2
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%tmp172 = icmp eq i16 %tmp169, %tmp171
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br label %bb173
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bb173: ; preds = %bb167, %bb
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%tmp174 = phi i1 [ false, %bb ], [ %tmp172, %bb167 ]
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%tmp175 = zext i1 %tmp174 to i32
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ret i32 %tmp175
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}
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; Function Attrs: minsize optsize
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declare %struct.ref_s* @name_string_ref(%struct.ref_s*, %struct.ref_s*) #1
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attributes #0 = { minsize nounwind optsize }
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attributes #1 = { minsize optsize }
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attributes #2 = { minsize nounwind optsize }
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