17e5794f11
If in complex addressing mode the difference is in GV then base reg should not be installed because we plan to use base reg as a merge point of different GVs. This is a fix for PR35980. Reviewers: reames, john.brawn, santosh Reviewed By: john.brawn Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D42230 llvm-svn: 323192
35 lines
1.1 KiB
LLVM
35 lines
1.1 KiB
LLVM
; RUN: opt -S -codegenprepare -disable-complex-addr-modes=false -addr-sink-new-select=true %s | FileCheck %s --check-prefix=CHECK
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target datalayout =
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"e-p:64:64:64-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"
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target triple = "x86_64-unknown-linux-gnu"
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; Select when both offset and scale reg are present.
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define i64 @test1(i1 %c, i64* %b, i64 %scale) {
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; CHECK-LABEL: @test1
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entry:
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; CHECK-LABEL: entry:
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%g = getelementptr inbounds i64, i64* %b, i64 %scale
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%g1 = getelementptr inbounds i64, i64* %g, i64 8
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%g2 = getelementptr inbounds i64, i64* %g, i64 16
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%s = select i1 %c, i64* %g1, i64* %g2
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; CHECK-NOT: sunkaddr
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%v = load i64 , i64* %s, align 8
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ret i64 %v
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}
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@gv1 = external global i8, align 16
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@gv2 = external global i8, align 16
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; Select when both GV and base reg are present.
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define i8 @test2(i1 %c, i64 %b) {
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; CHECK-LABEL: @test2
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entry:
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; CHECK-LABEL: entry:
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%g1 = getelementptr inbounds i8, i8* @gv1, i64 %b
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%g2 = getelementptr inbounds i8, i8* @gv2, i64 %b
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%s = select i1 %c, i8* %g1, i8* %g2
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; CHECK-NOT: sunkaddr
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%v = load i8 , i8* %s, align 8
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ret i8 %v
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}
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