63 lines
2.3 KiB
LLVM
63 lines
2.3 KiB
LLVM
; 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, ptr }
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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 { ptr }
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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 ptr 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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%load0 = load ptr, ptr @j, align 8
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%bw = getelementptr inbounds %struct.az, ptr %load0, i64 0, i32 1
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%load1 = load i32, ptr @h, align 4
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%cond = icmp eq i32 %load1, 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(ptr @ch)
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br label %cl
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cl: ; preds = %sw.bb, %entry
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%load2 = load ptr, ptr %bw, align 8
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%tobool = icmp eq ptr %load2, null
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%load3 = load i32, ptr @ck, align 4
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%.sink5 = select i1 %tobool, ptr getelementptr (%struct.bg, ptr getelementptr inbounds (%struct.f, ptr @ch, i64 0, i32 1), i64 0, i32 1), ptr getelementptr (%struct.ap, ptr getelementptr inbounds (%struct.f, ptr @ch, i64 0, i32 1), i64 0, i32 1)
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store i32 %load3, ptr %.sink5, align 4
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store i32 1, ptr getelementptr inbounds (%struct.f, ptr @ch, i64 0, i32 1, i32 0, i32 0), align 8
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%load4 = load ptr, ptr %bw, align 8
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tail call void (ptr, ...) @a(ptr @.str, ptr %load4)
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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:[a-z0-9]+]] = load ptr, ptr @j
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; CHECK-LABEL: cl:
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; CHECK-NOT: %{{[a-z0-9]+}} = load ptr, ptr %bw
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; CHECK-NOT: %{{[.a-z0-9]}} = select
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; CHECK-NOT: %{{[a-z0-9]+}} = load ptr, ptr %bw
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; CHECK: %sunkaddr = getelementptr inbounds i8, ptr %[[I0]], i64 8
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; CHECK-NEXT: %{{[a-z0-9]+}} = load ptr, ptr %sunkaddr
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; CHECK-NEXT: tail call void (ptr, ...) @a
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declare inreg { i64, i64 } @ba(ptr)
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declare void @a(ptr, ...)
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