mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-11 23:05:31 +00:00
f648125be9
cache a pointer as being unavailable due to phi trans in the wrong place. This would cause later queries to fail even when they didn't involve phi trans. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91787 91177308-0d34-0410-b5e6-96231b3b80d8
147 lines
3.2 KiB
LLVM
147 lines
3.2 KiB
LLVM
; RUN: opt < %s -gvn -S | FileCheck %s
|
|
|
|
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 triple = "i386-apple-darwin7"
|
|
|
|
define i32 @test1(i32* %b, i32* %c) nounwind {
|
|
; CHECK: @test1
|
|
entry:
|
|
%g = alloca i32
|
|
%t1 = icmp eq i32* %b, null
|
|
br i1 %t1, label %bb, label %bb1
|
|
|
|
bb:
|
|
%t2 = load i32* %c, align 4
|
|
%t3 = add i32 %t2, 1
|
|
store i32 %t3, i32* %g, align 4
|
|
br label %bb2
|
|
|
|
bb1: ; preds = %entry
|
|
%t5 = load i32* %b, align 4
|
|
%t6 = add i32 %t5, 1
|
|
store i32 %t6, i32* %g, align 4
|
|
br label %bb2
|
|
|
|
bb2: ; preds = %bb1, %bb
|
|
%c_addr.0 = phi i32* [ %g, %bb1 ], [ %c, %bb ]
|
|
%b_addr.0 = phi i32* [ %b, %bb1 ], [ %g, %bb ]
|
|
%cv = load i32* %c_addr.0, align 4
|
|
%bv = load i32* %b_addr.0, align 4
|
|
; CHECK: %bv = phi i32
|
|
; CHECK: %cv = phi i32
|
|
; CHECK-NOT: load
|
|
; CHECK: ret i32
|
|
%ret = add i32 %cv, %bv
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i8 @test2(i1 %cond, i32* %b, i32* %c) nounwind {
|
|
; CHECK: @test2
|
|
entry:
|
|
br i1 %cond, label %bb, label %bb1
|
|
|
|
bb:
|
|
%b1 = bitcast i32* %b to i8*
|
|
store i8 4, i8* %b1
|
|
br label %bb2
|
|
|
|
bb1:
|
|
%c1 = bitcast i32* %c to i8*
|
|
store i8 92, i8* %c1
|
|
br label %bb2
|
|
|
|
bb2:
|
|
%d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
|
|
%d1 = bitcast i32* %d to i8*
|
|
%dv = load i8* %d1
|
|
; CHECK: %dv = phi i8 [ 92, %bb1 ], [ 4, %bb ]
|
|
; CHECK-NOT: load
|
|
; CHECK: ret i8 %dv
|
|
ret i8 %dv
|
|
}
|
|
|
|
define i32 @test3(i1 %cond, i32* %b, i32* %c) nounwind {
|
|
; CHECK: @test3
|
|
entry:
|
|
br i1 %cond, label %bb, label %bb1
|
|
|
|
bb:
|
|
%b1 = getelementptr i32* %b, i32 17
|
|
store i32 4, i32* %b1
|
|
br label %bb2
|
|
|
|
bb1:
|
|
%c1 = getelementptr i32* %c, i32 7
|
|
store i32 82, i32* %c1
|
|
br label %bb2
|
|
|
|
bb2:
|
|
%d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
|
|
%i = phi i32 [ 7, %bb1 ], [ 17, %bb ]
|
|
%d1 = getelementptr i32* %d, i32 %i
|
|
%dv = load i32* %d1
|
|
; CHECK: %dv = phi i32 [ 82, %bb1 ], [ 4, %bb ]
|
|
; CHECK-NOT: load
|
|
; CHECK: ret i32 %dv
|
|
ret i32 %dv
|
|
}
|
|
|
|
; PR5313
|
|
define i32 @test4(i1 %cond, i32* %b, i32* %c) nounwind {
|
|
; CHECK: @test4
|
|
entry:
|
|
br i1 %cond, label %bb, label %bb1
|
|
|
|
bb:
|
|
store i32 4, i32* %b
|
|
br label %bb2
|
|
|
|
bb1:
|
|
%c1 = getelementptr i32* %c, i32 7
|
|
store i32 82, i32* %c1
|
|
br label %bb2
|
|
|
|
bb2:
|
|
%d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
|
|
%i = phi i32 [ 7, %bb1 ], [ 0, %bb ]
|
|
%d1 = getelementptr i32* %d, i32 %i
|
|
%dv = load i32* %d1
|
|
; CHECK: %dv = phi i32 [ 82, %bb1 ], [ 4, %bb ]
|
|
; CHECK-NOT: load
|
|
; CHECK: ret i32 %dv
|
|
ret i32 %dv
|
|
}
|
|
|
|
|
|
|
|
; void test5(int N, double* G) {
|
|
; for (long j = 1; j < 1000; j++)
|
|
; G[j] = G[j] + G[j-1];
|
|
; }
|
|
;
|
|
; Should compile into one load in the loop.
|
|
define void @test5(i32 %N, double* nocapture %G) nounwind ssp {
|
|
; CHECK: @test5
|
|
bb.nph:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvar = phi i64 [ 0, %bb.nph ], [ %tmp, %for.body ]
|
|
%arrayidx6 = getelementptr double* %G, i64 %indvar
|
|
%tmp = add i64 %indvar, 1
|
|
%arrayidx = getelementptr double* %G, i64 %tmp
|
|
%tmp3 = load double* %arrayidx
|
|
%tmp7 = load double* %arrayidx6
|
|
%add = fadd double %tmp3, %tmp7
|
|
store double %add, double* %arrayidx
|
|
%exitcond = icmp eq i64 %tmp, 999
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
; CHECK: for.body:
|
|
; CHECK: phi double
|
|
; CHECK: load double
|
|
; CHECK-NOT: load double
|
|
; CHECK: br i1
|
|
for.end:
|
|
ret void
|
|
}
|