-; RUN: opt < %s -gvn -S | FileCheck %s
+; RUN: opt < %s -basicaa -gvn -S -die | FileCheck %s
; 32-bit little endian target.
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
;; Trivial RLE test.
define i32 @test0(i32 %V, i32* %P) {
ret i8 %Y
}
+;; No PR filed, crashed in CaptureTracker.
+declare void @helper()
+define void @crash1() {
+ tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* undef, i8* undef, i64 undef, i32 1, i1 false) nounwind
+ %tmp = load i8* bitcast (void ()* @helper to i8*)
+ %x = icmp eq i8 %tmp, 15
+ ret void
+}
+
;;===----------------------------------------------------------------------===;;
;; Store -> Load and Load -> Load forwarding where src and dst are different
define signext i16 @memset_to_i16_local(i16* %A) nounwind ssp {
entry:
%conv = bitcast i16* %A to i8*
- tail call void @llvm.memset.i64(i8* %conv, i8 1, i64 200, i32 1)
+ tail call void @llvm.memset.p0i8.i64(i8* %conv, i8 1, i64 200, i32 1, i1 false)
%arrayidx = getelementptr inbounds i16* %A, i64 42
%tmp2 = load i16* %arrayidx
ret i16 %tmp2
define float @memset_to_float_local(float* %A, i8 %Val) nounwind ssp {
entry:
%conv = bitcast float* %A to i8* ; <i8*> [#uses=1]
- tail call void @llvm.memset.i64(i8* %conv, i8 %Val, i64 400, i32 1)
+ tail call void @llvm.memset.p0i8.i64(i8* %conv, i8 %Val, i64 400, i32 1, i1 false)
%arrayidx = getelementptr inbounds float* %A, i64 42 ; <float*> [#uses=1]
%tmp2 = load float* %arrayidx ; <float> [#uses=1]
ret float %tmp2
%P3 = bitcast i16* %P to i8*
br i1 %cond, label %T, label %F
T:
- tail call void @llvm.memset.i64(i8* %P3, i8 1, i64 400, i32 1)
+ tail call void @llvm.memset.p0i8.i64(i8* %P3, i8 1, i64 400, i32 1, i1 false)
br label %Cont
F:
- tail call void @llvm.memset.i64(i8* %P3, i8 2, i64 400, i32 1)
+ tail call void @llvm.memset.p0i8.i64(i8* %P3, i8 2, i64 400, i32 1, i1 false)
br label %Cont
Cont:
define float @memcpy_to_float_local(float* %A) nounwind ssp {
entry:
%conv = bitcast float* %A to i8* ; <i8*> [#uses=1]
- tail call void @llvm.memcpy.i64(i8* %conv, i8* bitcast ({i32, float, i32 }* @GCst to i8*), i64 12, i32 1)
+ tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %conv, i8* bitcast ({i32, float, i32 }* @GCst to i8*), i64 12, i32 1, i1 false)
%arrayidx = getelementptr inbounds float* %A, i64 1 ; <float*> [#uses=1]
%tmp2 = load float* %arrayidx ; <float> [#uses=1]
ret float %tmp2
}
-declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind
-declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
-
-
-
;; non-local i32/float -> i8 load forwarding.
define i8 @coerce_mustalias_nonlocal0(i32* %P, i1 %cond) {
define i32 @chained_load(i32** %p) {
block1:
+ %A = alloca i32*
+
%z = load i32** %p
- br i1 true, label %block2, label %block3
+ store i32* %z, i32** %A
+ br i1 true, label %block2, label %block3
block2:
%a = load i32** %p
define i8 @phi_trans4(i8* %p) {
; CHECK: @phi_trans4
entry:
+ %X3 = getelementptr i8* %p, i32 192
+ store i8 192, i8* %X3
+
%X = getelementptr i8* %p, i32 4
%Y = load i8* %X
br label %loop
loop:
%i = phi i32 [4, %entry], [192, %loop]
%X2 = getelementptr i8* %p, i32 %i
- %Y2 = load i8* %X
+ %Y2 = load i8* %X2
+
+; CHECK: loop:
+; CHECK-NEXT: %Y2 = phi i8 [ %Y, %entry ], [ 0, %loop ]
+; CHECK-NOT: load i8
%cond = call i1 @cond2()
- %Z = bitcast i8 *%X2 to i32*
+ %Z = bitcast i8 *%X3 to i32*
store i32 0, i32* %Z
br i1 %cond, label %loop, label %out
define i8 @phi_trans5(i8* %p) {
; CHECK: @phi_trans5
entry:
+
%X4 = getelementptr i8* %p, i32 2
store i8 19, i8* %X4
loop:
%i = phi i32 [4, %entry], [3, %cont]
%X2 = getelementptr i8* %p, i32 %i
- %Y2 = load i8* %X2
- ;; FIXME: This load is being incorrectly replaced!
+ %Y2 = load i8* %X2 ; Ensure this load is not being incorrectly replaced.
%cond = call i1 @cond2()
br i1 %cond, label %cont, label %out
%Z = getelementptr i8* %X2, i32 -1
%Z2 = bitcast i8 *%Z to i32*
store i32 50462976, i32* %Z2 ;; (1 << 8) | (2 << 16) | (3 << 24)
+
+
+; CHECK: store i32
+; CHECK-NEXT: getelementptr i8* %p, i32 3
+; CHECK-NEXT: load i8*
br label %loop
out:
}
+; PR6642
+define i32 @memset_to_load() nounwind readnone {
+entry:
+ %x = alloca [256 x i32], align 4 ; <[256 x i32]*> [#uses=2]
+ %tmp = bitcast [256 x i32]* %x to i8* ; <i8*> [#uses=1]
+ call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 1024, i32 4, i1 false)
+ %arraydecay = getelementptr inbounds [256 x i32]* %x, i32 0, i32 0 ; <i32*>
+ %tmp1 = load i32* %arraydecay ; <i32> [#uses=1]
+ ret i32 %tmp1
+; CHECK: @memset_to_load
+; CHECK: ret i32 0
+}
+
+
+;;===----------------------------------------------------------------------===;;
+;; Load -> Load forwarding in partial alias case.
+;;===----------------------------------------------------------------------===;;
+
+define i32 @load_load_partial_alias(i8* %P) nounwind ssp {
+entry:
+ %0 = bitcast i8* %P to i32*
+ %tmp2 = load i32* %0
+ %add.ptr = getelementptr inbounds i8* %P, i64 1
+ %tmp5 = load i8* %add.ptr
+ %conv = zext i8 %tmp5 to i32
+ %add = add nsw i32 %tmp2, %conv
+ ret i32 %add
+
+; TEMPORARILYDISABLED: @load_load_partial_alias
+; TEMPORARILYDISABLED: load i32*
+; TEMPORARILYDISABLED-NOT: load
+; TEMPORARILYDISABLED: lshr i32 {{.*}}, 8
+; TEMPORARILYDISABLED-NOT: load
+; TEMPORARILYDISABLED: trunc i32 {{.*}} to i8
+; TEMPORARILYDISABLED-NOT: load
+; TEMPORARILYDISABLED: ret i32
+}
+
+; Cross block partial alias case.
+define i32 @load_load_partial_alias_cross_block(i8* %P) nounwind ssp {
+entry:
+ %xx = bitcast i8* %P to i32*
+ %x1 = load i32* %xx, align 4
+ %cmp = icmp eq i32 %x1, 127
+ br i1 %cmp, label %land.lhs.true, label %if.end
+
+land.lhs.true: ; preds = %entry
+ %arrayidx4 = getelementptr inbounds i8* %P, i64 1
+ %tmp5 = load i8* %arrayidx4, align 1
+ %conv6 = zext i8 %tmp5 to i32
+ ret i32 %conv6
+
+if.end:
+ ret i32 52
+; TEMPORARILY_DISABLED: @load_load_partial_alias_cross_block
+; TEMPORARILY_DISABLED: land.lhs.true:
+; TEMPORARILY_DISABLED-NOT: load i8
+; TEMPORARILY_DISABLED: ret i32 %conv6
+}
+
+
+;;===----------------------------------------------------------------------===;;
+;; Load Widening
+;;===----------------------------------------------------------------------===;;
+
+%widening1 = type { i32, i8, i8, i8, i8 }
+
+@f = global %widening1 zeroinitializer, align 4
+
+define i32 @test_widening1(i8* %P) nounwind ssp noredzone {
+entry:
+ %tmp = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 1), align 4
+ %conv = zext i8 %tmp to i32
+ %tmp1 = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 2), align 1
+ %conv2 = zext i8 %tmp1 to i32
+ %add = add nsw i32 %conv, %conv2
+ ret i32 %add
+; CHECK: @test_widening1
+; CHECK-NOT: load
+; CHECK: load i16*
+; CHECK-NOT: load
+; CHECK: ret i32
+}
+
+define i32 @test_widening2() nounwind ssp noredzone {
+entry:
+ %tmp = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 1), align 4
+ %conv = zext i8 %tmp to i32
+ %tmp1 = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 2), align 1
+ %conv2 = zext i8 %tmp1 to i32
+ %add = add nsw i32 %conv, %conv2
+
+ %tmp2 = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 3), align 2
+ %conv3 = zext i8 %tmp2 to i32
+ %add2 = add nsw i32 %add, %conv3
+
+ %tmp3 = load i8* getelementptr inbounds (%widening1* @f, i64 0, i32 4), align 1
+ %conv4 = zext i8 %tmp3 to i32
+ %add3 = add nsw i32 %add2, %conv3
+
+ ret i32 %add3
+; CHECK: @test_widening2
+; CHECK-NOT: load
+; CHECK: load i32*
+; CHECK-NOT: load
+; CHECK: ret i32
+}
+
+declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
+
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
+
+;;===----------------------------------------------------------------------===;;
+;; Load -> Store dependency which isn't interfered with by a call that happens
+;; before the pointer was captured.
+;;===----------------------------------------------------------------------===;;
+
+%class.X = type { [8 x i8] }
+
+@_ZTV1X = weak_odr constant [5 x i8*] zeroinitializer
+@_ZTV1Y = weak_odr constant [5 x i8*] zeroinitializer
+
+declare void @use()
+declare void @use3(i8***, i8**)
+
+; PR8908
+define void @test_escape1() nounwind {
+ %x = alloca i8**, align 8
+ store i8** getelementptr inbounds ([5 x i8*]* @_ZTV1X, i64 0, i64 2), i8*** %x, align 8
+ call void @use() nounwind
+ %DEAD = load i8*** %x, align 8
+ call void @use3(i8*** %x, i8** %DEAD) nounwind
+ ret void
+; CHECK: test_escape1
+; CHECK-NOT: DEAD
+; CHECK: ret
+}
projects / oota-llvm.git / blobdiff