mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
c94da20917
Summary: DataLayout keeps the string used for its creation. As a side effect it is no longer needed in the Module. This is "almost" NFC, the string is no longer canonicalized, you can't rely on two "equals" DataLayout having the same string returned by getStringRepresentation(). Get rid of DataLayoutPass: the DataLayout is in the Module The DataLayout is "per-module", let's enforce this by not duplicating it more than necessary. One more step toward non-optionality of the DataLayout in the module. Make DataLayout Non-Optional in the Module Module->getDataLayout() will never returns nullptr anymore. Reviewers: echristo Subscribers: resistor, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D7992 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
121 lines
2.9 KiB
LLVM
121 lines
2.9 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
define void @test1(i32* %P) {
|
|
store i32 undef, i32* %P
|
|
store i32 123, i32* undef
|
|
store i32 124, i32* null
|
|
ret void
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: store i32 123, i32* undef
|
|
; CHECK-NEXT: store i32 undef, i32* null
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
define void @test2(i32* %P) {
|
|
%X = load i32, i32* %P ; <i32> [#uses=1]
|
|
%Y = add i32 %X, 0 ; <i32> [#uses=1]
|
|
store i32 %Y, i32* %P
|
|
ret void
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
;; Simple sinking tests
|
|
|
|
; "if then else"
|
|
define i32 @test3(i1 %C) {
|
|
%A = alloca i32
|
|
br i1 %C, label %Cond, label %Cond2
|
|
|
|
Cond:
|
|
store i32 -987654321, i32* %A
|
|
br label %Cont
|
|
|
|
Cond2:
|
|
store i32 47, i32* %A
|
|
br label %Cont
|
|
|
|
Cont:
|
|
%V = load i32, i32* %A
|
|
ret i32 %V
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NOT: alloca
|
|
; CHECK: Cont:
|
|
; CHECK-NEXT: %storemerge = phi i32 [ -987654321, %Cond ], [ 47, %Cond2 ]
|
|
; CHECK-NEXT: ret i32 %storemerge
|
|
}
|
|
|
|
; "if then"
|
|
define i32 @test4(i1 %C) {
|
|
%A = alloca i32
|
|
store i32 47, i32* %A
|
|
br i1 %C, label %Cond, label %Cont
|
|
|
|
Cond:
|
|
store i32 -987654321, i32* %A
|
|
br label %Cont
|
|
|
|
Cont:
|
|
%V = load i32, i32* %A
|
|
ret i32 %V
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NOT: alloca
|
|
; CHECK: Cont:
|
|
; CHECK-NEXT: %storemerge = phi i32 [ -987654321, %Cond ], [ 47, %0 ]
|
|
; CHECK-NEXT: ret i32 %storemerge
|
|
}
|
|
|
|
; "if then"
|
|
define void @test5(i1 %C, i32* %P) {
|
|
store i32 47, i32* %P, align 1
|
|
br i1 %C, label %Cond, label %Cont
|
|
|
|
Cond:
|
|
store i32 -987654321, i32* %P, align 1
|
|
br label %Cont
|
|
|
|
Cont:
|
|
ret void
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK: Cont:
|
|
; CHECK-NEXT: %storemerge = phi i32
|
|
; CHECK-NEXT: store i32 %storemerge, i32* %P, align 1
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
|
|
; PR14753 - merging two stores should preserve the TBAA tag.
|
|
define void @test6(i32 %n, float* %a, i32* %gi) nounwind uwtable ssp {
|
|
entry:
|
|
store i32 42, i32* %gi, align 4, !tbaa !0
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%storemerge = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%0 = load i32, i32* %gi, align 4, !tbaa !0
|
|
%cmp = icmp slt i32 %0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%idxprom = sext i32 %0 to i64
|
|
%arrayidx = getelementptr inbounds float, float* %a, i64 %idxprom
|
|
store float 0.000000e+00, float* %arrayidx, align 4, !tbaa !3
|
|
%1 = load i32, i32* %gi, align 4, !tbaa !0
|
|
%inc = add nsw i32 %1, 1
|
|
store i32 %inc, i32* %gi, align 4, !tbaa !0
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: phi i32 [ 42
|
|
; CHECK-NEXT: store i32 %storemerge, i32* %gi, align 4, !tbaa !0
|
|
}
|
|
|
|
!0 = !{!4, !4, i64 0}
|
|
!1 = !{!"omnipotent char", !2}
|
|
!2 = !{!"Simple C/C++ TBAA"}
|
|
!3 = !{!"float", !1}
|
|
!4 = !{!"int", !1}
|