forked from OSchip/llvm-project
57 lines
2.4 KiB
LLVM
57 lines
2.4 KiB
LLVM
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; RUN: opt < %s -loop-reduce -S | FileCheck %s
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; LSR shouldn't consider %t8 to be an interesting user of %t6, and it
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; should be able to form pretty GEPs.
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target datalayout = "e-p:64:64:64-p1:16:16:16-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-n8:16:32:64"
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; Copy of uglygep with a different address space
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; This tests expandAddToGEP uses the right smaller integer type for
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; another address space
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define void @Z4() nounwind {
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; CHECK: define void @Z4
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bb:
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br label %bb3
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bb1: ; preds = %bb3
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br i1 undef, label %bb10, label %bb2
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bb2: ; preds = %bb1
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%t = add i16 %t4, 1 ; <i16> [#uses=1]
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br label %bb3
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bb3: ; preds = %bb2, %bb
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%t4 = phi i16 [ %t, %bb2 ], [ 0, %bb ] ; <i16> [#uses=3]
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br label %bb1
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; CHECK: bb10:
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; CHECK-NEXT: %t7 = icmp eq i16 %t4, 0
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; Host %t2 computation outside the loop.
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; CHECK-NEXT: [[SCEVGEP:%[^ ]+]] = getelementptr i8 addrspace(1)* undef, i16 %t4
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; CHECK-NEXT: br label %bb14
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bb10: ; preds = %bb9
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%t7 = icmp eq i16 %t4, 0 ; <i1> [#uses=1]
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%t3 = add i16 %t4, 16 ; <i16> [#uses=1]
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br label %bb14
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; CHECK: bb14:
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; CHECK-NEXT: store i8 undef, i8 addrspace(1)* [[SCEVGEP]]
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; CHECK-NEXT: %t6 = load float addrspace(1)* addrspace(1)* undef
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; Fold %t3's add within the address.
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; CHECK-NEXT: [[SCEVGEP1:%[^ ]+]] = getelementptr float addrspace(1)* %t6, i16 4
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; CHECK-NEXT: [[SCEVGEP2:%[^ ]+]] = bitcast float addrspace(1)* [[SCEVGEP1]] to i8 addrspace(1)*
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; Use the induction variable (%t4) to access the right element
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; CHECK-NEXT: [[ADDRESS:%[^ ]+]] = getelementptr i8 addrspace(1)* [[SCEVGEP2]], i16 %t4
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; CHECK-NEXT: store i8 undef, i8 addrspace(1)* [[ADDRESS]]
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; CHECK-NEXT: br label %bb14
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bb14: ; preds = %bb14, %bb10
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%t2 = getelementptr inbounds i8 addrspace(1)* undef, i16 %t4 ; <i8*> [#uses=1]
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store i8 undef, i8 addrspace(1)* %t2
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%t6 = load float addrspace(1)* addrspace(1)* undef
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%t8 = bitcast float addrspace(1)* %t6 to i8 addrspace(1)* ; <i8*> [#uses=1]
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%t9 = getelementptr inbounds i8 addrspace(1)* %t8, i16 %t3 ; <i8*> [#uses=1]
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store i8 undef, i8 addrspace(1)* %t9
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br label %bb14
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}
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