forked from OSchip/llvm-project
65 lines
2.8 KiB
LLVM
65 lines
2.8 KiB
LLVM
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; RUN: opt -S -mtriple=mips64-mti-linux-gnu -codegenprepare < %s | FileCheck %s
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; Test that if an address that was sunk from a dominating bb, used in a
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; select that is erased along with its' trivally dead operand, that the
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; sunken address is not reused if the same address computation occurs
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; after the select. Previously, this caused a ICE.
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%struct.az = type { i32, %struct.bt* }
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%struct.bt = type { i32 }
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%struct.f = type { %struct.ax, %union.anon }
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%struct.ax = type { %struct.az* }
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%union.anon = type { %struct.bd }
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%struct.bd = type { i64 }
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%struct.bg = type { i32, i32 }
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%struct.ap = type { i32, i32 }
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@ch = common global %struct.f zeroinitializer, align 8
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@j = common global %struct.az* null, align 8
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@ck = common global i32 0, align 4
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@h = common global i32 0, align 4
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@.str = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
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define internal void @probestart() {
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entry:
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%0 = load %struct.az*, %struct.az** @j, align 8
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%bw = getelementptr inbounds %struct.az, %struct.az* %0, i64 0, i32 1
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%1 = load i32, i32* @h, align 4
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%cond = icmp eq i32 %1, 0
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br i1 %cond, label %sw.bb, label %cl
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sw.bb: ; preds = %entry
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%call = tail call inreg { i64, i64 } @ba(i32* bitcast (%struct.f* @ch to i32*))
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br label %cl
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cl: ; preds = %sw.bb, %entry
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%2 = load %struct.bt*, %struct.bt** %bw, align 8
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%tobool = icmp eq %struct.bt* %2, null
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%3 = load i32, i32* @ck, align 4
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%.sink5 = select i1 %tobool, i32* getelementptr (%struct.bg, %struct.bg* bitcast (%union.anon* getelementptr inbounds (%struct.f, %struct.f* @ch, i64 0, i32 1) to %struct.bg*), i64 0, i32 1), i32* getelementptr (%struct.ap, %struct.ap* bitcast (%union.anon* getelementptr inbounds (%struct.f, %struct.f* @ch, i64 0, i32 1) to %struct.ap*), i64 0, i32 1)
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store i32 %3, i32* %.sink5, align 4
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store i32 1, i32* bitcast (i64* getelementptr inbounds (%struct.f, %struct.f* @ch, i64 0, i32 1, i32 0, i32 0) to i32*), align 8
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%4 = load %struct.bt*, %struct.bt** %bw, align 8
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tail call void (i8*, ...) @a(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0), %struct.bt* %4)
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ret void
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}
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; CHECK-LABEL: @probestart()
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; CHECK-LABEL: entry:
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; CHECK: %[[I0:[0-9]+]] = load %struct.az*, %struct.az** @j
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; CHECK-LABEL: cl:
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; CHECK-NOT: %{{[0-9]+}} = load %struct.bt*, %struct.bt** %bw
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; CHECK-NOT: %{{[.a-z0-9]}} = select
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; CHECK-NOT: %{{[0-9]+}} = load %struct.bt*, %struct.bt** %bw
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; CHECK: %[[I1:[0-9]+]] = bitcast %struct.az* %[[I0]] to i8*
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; CHECK-NEXT: %sunkaddr = getelementptr i8, i8* %[[I1]], i64 8
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; CHECK-NEXT: %[[I2:[0-9]+]] = bitcast i8* %sunkaddr to %struct.bt**
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; CHECK-NEXT: %{{[0-9]+}} = load %struct.bt*, %struct.bt** %[[I2]]
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; CHECK-NEXT: tail call void (i8*, ...) @a
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declare inreg { i64, i64 } @ba(i32*)
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declare void @a(i8*, ...)
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