67887b0f81
The scalarizer pass seems to be inserting instructions in-between PHI nodes or debug intrinsics that end up staying at the end of the pass, resulting in malformed IR and violating assumptions. This patch adds a check to make sure the `extractelement` instructions that it adds are correctly placed after all PHI nodes and debug intrinsics. Patch by vettoreldaniele. Reviewed By: bjope Differential Revision: https://reviews.llvm.org/D112472
30 lines
1.1 KiB
LLVM
30 lines
1.1 KiB
LLVM
; RUN: opt %s -passes='function(scalarizer)' -S -o - | FileCheck %s
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; This input caused the scalarizer to insert non-PHI nodes
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; in between PHI nodes (%1 and %2).
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define <3 x float> @func(i32 %inval) {
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.entry:
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br label %0
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0: ; preds = %3, %.entry
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; CHECK: %.i01 = phi float [ 0.000000e+00, %.entry ], [ %.i01, %3 ]
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; CHECK-NEXT: %.i12 = phi float [ 0.000000e+00, %.entry ], [ %.i12, %3 ]
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; CHECK-NEXT: %.i23 = phi float [ 0.000000e+00, %.entry ], [ %.i23, %3 ]
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; CHECK-NEXT: %1 = phi float [ 1.000000e+00, %.entry ], [ 2.000000e+00, %3 ]
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; CHECK-NEXT: %.upto0 = insertelement <3 x float> poison, float %.i01, i32 0
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; CHECK-NEXT: %.upto1 = insertelement <3 x float> %.upto0, float %.i12, i32 1
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; CHECK-NEXT: %2 = insertelement <3 x float> %.upto1, float %.i23, i32 2
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%1 = phi <3 x float> [ <float 0.0, float 0.0, float 0.0>, %.entry], [ %1, %3 ]
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%2 = phi float [ 1.0, %.entry], [ 2.0, %3 ]
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br label %3
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3: ; preds = %0
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%cond = icmp eq i32 %inval, 0
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br i1 %cond, label %0, label %exit
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exit:
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ret <3 x float> %1
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}
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