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https://github.com/c64scene-ar/llvm-6502.git
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47734db936
This is another prerequisite for frame-to-frame MVC copies. I'll commit the patch that makes use of the slot separately. The downside of trying to test many corner cases with each of the available addressing modes is that a fair few tests need to account for the new frame layout. I do still think it's useful to have all these tests though, since it's something that wouldn't get much coverage otherwise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185698 91177308-0d34-0410-b5e6-96231b3b80d8
353 lines
13 KiB
LLVM
353 lines
13 KiB
LLVM
; Test the handling of base + index + 12-bit displacement addresses for
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; large frames, in cases where no 20-bit form exists.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck -check-prefix=CHECK-NOFP %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
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declare void @foo(float *%ptr1, float *%ptr2)
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; This file tests what happens when a displacement is converted from
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; being relative to the start of a frame object to being relative to
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; the frame itself. In some cases the test is only possible if two
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; objects are allocated.
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;
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; Rather than rely on a particular order for those objects, the tests
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; instead allocate two objects of the same size and apply the test to
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; both of them. For consistency, all tests follow this model, even if
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; one object would actually be enough.
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; First check the highest in-range offset after conversion, which is 4092
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; for word-addressing instructions like LDEB.
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;
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; The last in-range doubleword offset is 4088. Since the frame has two
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; emergency spill slots at 160(%r15), the amount that we need to allocate
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; in order to put another object at offset 4088 is (4088 - 176) / 4 = 978
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; words.
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define void @f1(double *%dst) {
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; CHECK-NOFP: f1:
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4092(%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f1:
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; CHECK-FP: ldeb {{%f[0-7]}}, 4092(%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [978 x float], align 8
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%region2 = alloca [978 x float], align 8
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%start1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 1
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%ptr2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 1
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Test the first out-of-range offset.
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define void @f2(double *%dst) {
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; CHECK-NOFP: f2:
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; CHECK-NOFP: lghi %r1, 4096
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 0(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f2:
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; CHECK-FP: lghi %r1, 4096
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; CHECK-FP: ldeb {{%f[0-7]}}, 0(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [978 x float], align 8
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%region2 = alloca [978 x float], align 8
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%start1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 2
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%ptr2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 2
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Test the next offset after that.
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define void @f3(double *%dst) {
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; CHECK-NOFP: f3:
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; CHECK-NOFP: lghi %r1, 4096
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f3:
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; CHECK-FP: lghi %r1, 4096
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; CHECK-FP: ldeb {{%f[0-7]}}, 4(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [978 x float], align 8
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%region2 = alloca [978 x float], align 8
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%start1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 3
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%ptr2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 3
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Add 4096 bytes (1024 words) to the size of each object and repeat.
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define void @f4(double *%dst) {
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; CHECK-NOFP: f4:
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; CHECK-NOFP: lghi %r1, 4096
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4092(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f4:
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; CHECK-FP: lghi %r1, 4096
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; CHECK-FP: ldeb {{%f[0-7]}}, 4092(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [2002 x float], align 8
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%region2 = alloca [2002 x float], align 8
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%start1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 1
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%ptr2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 1
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; ...as above.
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define void @f5(double *%dst) {
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; CHECK-NOFP: f5:
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; CHECK-NOFP: lghi %r1, 8192
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 0(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f5:
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; CHECK-FP: lghi %r1, 8192
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; CHECK-FP: ldeb {{%f[0-7]}}, 0(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [2002 x float], align 8
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%region2 = alloca [2002 x float], align 8
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%start1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 2
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%ptr2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 2
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; ...as above.
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define void @f6(double *%dst) {
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; CHECK-NOFP: f6:
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; CHECK-NOFP: lghi %r1, 8192
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f6:
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; CHECK-FP: lghi %r1, 8192
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; CHECK-FP: ldeb {{%f[0-7]}}, 4(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [2002 x float], align 8
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%region2 = alloca [2002 x float], align 8
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%start1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2002 x float]* %region1, i64 0, i64 3
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%ptr2 = getelementptr inbounds [2002 x float]* %region2, i64 0, i64 3
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Now try an offset of 4092 from the start of the object, with the object
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; being at offset 8192. This time we need objects of (8192 - 168) / 4 = 2004
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; words.
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define void @f7(double *%dst) {
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; CHECK-NOFP: f7:
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; CHECK-NOFP: lghi %r1, 8192
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4092(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f7:
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; CHECK-FP: lghi %r1, 8192
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; CHECK-FP: ldeb {{%f[0-7]}}, 4092(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [2004 x float], align 8
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%region2 = alloca [2004 x float], align 8
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%start1 = getelementptr inbounds [2004 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2004 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2004 x float]* %region1, i64 0, i64 1023
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%ptr2 = getelementptr inbounds [2004 x float]* %region2, i64 0, i64 1023
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Keep the object-relative offset the same but bump the size of the
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; objects by one doubleword.
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define void @f8(double *%dst) {
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; CHECK-NOFP: f8:
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; CHECK-NOFP: lghi %r1, 12288
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 4(%r1,%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f8:
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; CHECK-FP: lghi %r1, 12288
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; CHECK-FP: ldeb {{%f[0-7]}}, 4(%r1,%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [2006 x float], align 8
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%region2 = alloca [2006 x float], align 8
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%start1 = getelementptr inbounds [2006 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2006 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2006 x float]* %region1, i64 0, i64 1023
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%ptr2 = getelementptr inbounds [2006 x float]* %region2, i64 0, i64 1023
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Check a case where the original displacement is out of range. The backend
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; should force an LAY from the outset. We don't yet do any kind of anchor
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; optimization, so there should be no offset on the LDEB itself.
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define void @f9(double *%dst) {
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; CHECK-NOFP: f9:
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; CHECK-NOFP: lay %r1, 12296(%r15)
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 0(%r1)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f9:
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; CHECK-FP: lay %r1, 12296(%r11)
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; CHECK-FP: ldeb {{%f[0-7]}}, 0(%r1)
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; CHECK-FP: br %r14
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%region1 = alloca [2006 x float], align 8
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%region2 = alloca [2006 x float], align 8
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%start1 = getelementptr inbounds [2006 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [2006 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [2006 x float]* %region1, i64 0, i64 1024
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%ptr2 = getelementptr inbounds [2006 x float]* %region2, i64 0, i64 1024
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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; Repeat f2 in a case that needs the emergency spill slots, because all
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; call-clobbered and allocated call-saved registers are live. Note that
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; %vptr and %dst are copied to call-saved registers, freeing up %r2 and
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; %r3 during the main test.
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define void @f10(i32 *%vptr, double *%dst) {
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; CHECK-NOFP: f10:
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; CHECK-NOFP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r15)
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; CHECK-NOFP: lghi [[REGISTER]], 4096
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 0([[REGISTER]],%r15)
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; CHECK-NOFP: lg [[REGISTER]], [[OFFSET]](%r15)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f10:
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; CHECK-FP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r11)
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; CHECK-FP: lghi [[REGISTER]], 4096
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; CHECK-FP: ldeb {{%f[0-7]}}, 0([[REGISTER]],%r11)
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; CHECK-FP: lg [[REGISTER]], [[OFFSET]](%r11)
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; CHECK-FP: br %r14
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%region1 = alloca [978 x float], align 8
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%region2 = alloca [978 x float], align 8
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%start1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%ptr1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 2
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%ptr2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 2
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%i0 = load volatile i32 *%vptr
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%i1 = load volatile i32 *%vptr
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%i2 = load volatile i32 *%vptr
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%i3 = load volatile i32 *%vptr
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%i4 = load volatile i32 *%vptr
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%i5 = load volatile i32 *%vptr
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%i14 = load volatile i32 *%vptr
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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store volatile i32 %i0, i32 *%vptr
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store volatile i32 %i1, i32 *%vptr
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store volatile i32 %i2, i32 *%vptr
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store volatile i32 %i3, i32 *%vptr
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store volatile i32 %i4, i32 *%vptr
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store volatile i32 %i5, i32 *%vptr
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store volatile i32 %i14, i32 *%vptr
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ret void
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}
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; Repeat f2 in a case where the index register is already occupied.
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define void @f11(double *%dst, i64 %index) {
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; CHECK-NOFP: f11:
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; CHECK-NOFP: lgr [[REGISTER:%r[1-9][0-5]?]], %r3
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; CHECK-NOFP: lay %r1, 4096(%r15)
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; CHECK-NOFP: ldeb {{%f[0-7]}}, 0([[REGISTER]],%r1)
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP: f11:
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; CHECK-FP: lgr [[REGISTER:%r[1-9][0-5]?]], %r3
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; CHECK-FP: lay %r1, 4096(%r11)
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; CHECK-FP: ldeb {{%f[0-7]}}, 0([[REGISTER]],%r1)
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; CHECK-FP: br %r14
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%region1 = alloca [978 x float], align 8
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%region2 = alloca [978 x float], align 8
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%start1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 0
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%start2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 0
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call void @foo(float *%start1, float *%start2)
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%elem1 = getelementptr inbounds [978 x float]* %region1, i64 0, i64 2
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%elem2 = getelementptr inbounds [978 x float]* %region2, i64 0, i64 2
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%base1 = ptrtoint float *%elem1 to i64
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%base2 = ptrtoint float *%elem2 to i64
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%addr1 = add i64 %base1, %index
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%addr2 = add i64 %base2, %index
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%ptr1 = inttoptr i64 %addr1 to float *
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%ptr2 = inttoptr i64 %addr2 to float *
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%float1 = load float *%ptr1
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%float2 = load float *%ptr2
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%double1 = fpext float %float1 to double
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%double2 = fpext float %float2 to double
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store volatile double %double1, double *%dst
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store volatile double %double2, double *%dst
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ret void
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}
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