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[AArch64] Add some more regression tests for load pre-index update folding in the load/store optimizer.

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Add tests for the following transform:

 add x8, x8, #16
  ...
 ldr X, [x8]
  ->
 ldr X, [x8, #16]!

with X being either w0, x0, s0, d0 or q0.

llvm-svn: 210018
This commit is contained in:
Tilmann Scheller 2014-06-02 11:57:09 +00:00
parent e95c2e918a
commit d9a7937b47
1 changed files with 106 additions and 0 deletions
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106
test/CodeGen/AArch64/ldst-opt.ll
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@ -164,6 +164,112 @@ bar:
ret void
}
; Check the following transform:
;
; add x8, x8, #16
; ...
; ldr X, [x8]
; ->
; ldr X, [x8, #16]!
;
; with X being either w0, x0, s0, d0 or q0.
%pre.struct.i32 = type { i32, i32, i32}
%pre.struct.i64 = type { i32, i64, i64}
%pre.struct.i128 = type { i32, <2 x i64>, <2 x i64>}
%pre.struct.float = type { i32, float, float}
%pre.struct.double = type { i32, double, double}
define i32 @load-pre-indexed-word2(%pre.struct.i32** %this, i1 %cond,
%pre.struct.i32* %load2) nounwind {
; CHECK-LABEL: load-pre-indexed-word2
; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #4]!
br i1 %cond, label %if.then, label %if.end
if.then:
%load1 = load %pre.struct.i32** %this
%gep1 = getelementptr inbounds %pre.struct.i32* %load1, i64 0, i32 1
br label %return
if.end:
%gep2 = getelementptr inbounds %pre.struct.i32* %load2, i64 0, i32 2
br label %return
return:
%retptr = phi i32* [ %gep1, %if.then ], [ %gep2, %if.end ]
%ret = load i32* %retptr
ret i32 %ret
}
define i64 @load-pre-indexed-doubleword2(%pre.struct.i64** %this, i1 %cond,
%pre.struct.i64* %load2) nounwind {
; CHECK-LABEL: load-pre-indexed-doubleword2
; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}, #8]!
br i1 %cond, label %if.then, label %if.end
if.then:
%load1 = load %pre.struct.i64** %this
%gep1 = getelementptr inbounds %pre.struct.i64* %load1, i64 0, i32 1
br label %return
if.end:
%gep2 = getelementptr inbounds %pre.struct.i64* %load2, i64 0, i32 2
br label %return
return:
%retptr = phi i64* [ %gep1, %if.then ], [ %gep2, %if.end ]
%ret = load i64* %retptr
ret i64 %ret
}
define <2 x i64> @load-pre-indexed-quadword2(%pre.struct.i128** %this, i1 %cond,
%pre.struct.i128* %load2) nounwind {
; CHECK-LABEL: load-pre-indexed-quadword2
; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}, #16]!
br i1 %cond, label %if.then, label %if.end
if.then:
%load1 = load %pre.struct.i128** %this
%gep1 = getelementptr inbounds %pre.struct.i128* %load1, i64 0, i32 1
br label %return
if.end:
%gep2 = getelementptr inbounds %pre.struct.i128* %load2, i64 0, i32 2
br label %return
return:
%retptr = phi <2 x i64>* [ %gep1, %if.then ], [ %gep2, %if.end ]
%ret = load <2 x i64>* %retptr
ret <2 x i64> %ret
}
define float @load-pre-indexed-float2(%pre.struct.float** %this, i1 %cond,
%pre.struct.float* %load2) nounwind {
; CHECK-LABEL: load-pre-indexed-float2
; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}, #4]!
br i1 %cond, label %if.then, label %if.end
if.then:
%load1 = load %pre.struct.float** %this
%gep1 = getelementptr inbounds %pre.struct.float* %load1, i64 0, i32 1
br label %return
if.end:
%gep2 = getelementptr inbounds %pre.struct.float* %load2, i64 0, i32 2
br label %return
return:
%retptr = phi float* [ %gep1, %if.then ], [ %gep2, %if.end ]
%ret = load float* %retptr
ret float %ret
}
define double @load-pre-indexed-double2(%pre.struct.double** %this, i1 %cond,
%pre.struct.double* %load2) nounwind {
; CHECK-LABEL: load-pre-indexed-double2
; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}, #8]!
br i1 %cond, label %if.then, label %if.end
if.then:
%load1 = load %pre.struct.double** %this
%gep1 = getelementptr inbounds %pre.struct.double* %load1, i64 0, i32 1
br label %return
if.end:
%gep2 = getelementptr inbounds %pre.struct.double* %load2, i64 0, i32 2
br label %return
return:
%retptr = phi double* [ %gep1, %if.then ], [ %gep2, %if.end ]
%ret = load double* %retptr
ret double %ret
}
; Check the following transform:
;
; ldr X, [x20]