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90 lines
2.3 KiB
LLVM
90 lines
2.3 KiB
LLVM
; Test 64-bit floating-point comparison.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check comparison with registers.
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define i64 @f1(i64 %a, i64 %b, double %f1, double %f2) {
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; CHECK: f1:
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; CHECK: cdbr %f0, %f2
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check the low end of the CDB range.
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define i64 @f2(i64 %a, i64 %b, double %f1, double *%ptr) {
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; CHECK: f2:
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; CHECK: cdb %f0, 0(%r4)
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%f2 = load double *%ptr
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check the high end of the aligned CDB range.
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define i64 @f3(i64 %a, i64 %b, double %f1, double *%base) {
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; CHECK: f3:
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; CHECK: cdb %f0, 4088(%r4)
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%ptr = getelementptr double *%base, i64 511
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%f2 = load double *%ptr
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check the next doubleword up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define i64 @f4(i64 %a, i64 %b, double %f1, double *%base) {
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; CHECK: f4:
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; CHECK: aghi %r4, 4096
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; CHECK: cdb %f0, 0(%r4)
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%ptr = getelementptr double *%base, i64 512
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%f2 = load double *%ptr
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check negative displacements, which also need separate address logic.
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define i64 @f5(i64 %a, i64 %b, double %f1, double *%base) {
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; CHECK: f5:
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; CHECK: aghi %r4, -8
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; CHECK: cdb %f0, 0(%r4)
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%ptr = getelementptr double *%base, i64 -1
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%f2 = load double *%ptr
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check that CDB allows indices.
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define i64 @f6(i64 %a, i64 %b, double %f1, double *%base, i64 %index) {
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; CHECK: f6:
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; CHECK: sllg %r1, %r5, 3
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; CHECK: cdb %f0, 800(%r1,%r4)
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; CHECK-NEXT: je
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%ptr1 = getelementptr double *%base, i64 %index
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%ptr2 = getelementptr double *%ptr1, i64 100
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%f2 = load double *%ptr2
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%cond = fcmp oeq double %f1, %f2
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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