-; Test 32-bit floating-point comparison.
+; Test 32-bit floating-point comparison. The tests assume a z10 implementation
+; of select, using conditional branches rather than LOCGR.
;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
+
+declare float @foo()
; Check comparison with registers.
define i64 @f1(i64 %a, i64 %b, float %f1, float %f2) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
; CHECK: cebr %f0, %f2
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%cond = fcmp oeq float %f1, %f2
; Check the low end of the CEB range.
define i64 @f2(i64 %a, i64 %b, float %f1, float *%ptr) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
; CHECK: ceb %f0, 0(%r4)
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%f2 = load float *%ptr
; Check the high end of the aligned CEB range.
define i64 @f3(i64 %a, i64 %b, float %f1, float *%base) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
; CHECK: ceb %f0, 4092(%r4)
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1023
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i64 @f4(i64 %a, i64 %b, float %f1, float *%base) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
; CHECK: aghi %r4, 4096
; CHECK: ceb %f0, 0(%r4)
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 1024
; Check negative displacements, which also need separate address logic.
define i64 @f5(i64 %a, i64 %b, float %f1, float *%base) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
; CHECK: aghi %r4, -4
; CHECK: ceb %f0, 0(%r4)
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%ptr = getelementptr float *%base, i64 -1
; Check that CEB allows indices.
define i64 @f6(i64 %a, i64 %b, float %f1, float *%base, i64 %index) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r5, 2
; CHECK: ceb %f0, 400(%r1,%r4)
-; CHECK-NEXT: j{{g?}}e
+; CHECK-NEXT: je
; CHECK: lgr %r2, %r3
; CHECK: br %r14
%ptr1 = getelementptr float *%base, i64 %index
%res = select i1 %cond, i64 %a, i64 %b
ret i64 %res
}
+
+; Check that comparisons of spilled values can use CEB rather than CEBR.
+define float @f7(float *%ptr0) {
+; CHECK-LABEL: f7:
+; CHECK: brasl %r14, foo@PLT
+; CHECK: ceb {{%f[0-9]+}}, 16{{[04]}}(%r15)
+; CHECK: br %r14
+ %ptr1 = getelementptr float *%ptr0, i64 2
+ %ptr2 = getelementptr float *%ptr0, i64 4
+ %ptr3 = getelementptr float *%ptr0, i64 6
+ %ptr4 = getelementptr float *%ptr0, i64 8
+ %ptr5 = getelementptr float *%ptr0, i64 10
+ %ptr6 = getelementptr float *%ptr0, i64 12
+ %ptr7 = getelementptr float *%ptr0, i64 14
+ %ptr8 = getelementptr float *%ptr0, i64 16
+ %ptr9 = getelementptr float *%ptr0, i64 18
+ %ptr10 = getelementptr float *%ptr0, i64 20
+
+ %val0 = load float *%ptr0
+ %val1 = load float *%ptr1
+ %val2 = load float *%ptr2
+ %val3 = load float *%ptr3
+ %val4 = load float *%ptr4
+ %val5 = load float *%ptr5
+ %val6 = load float *%ptr6
+ %val7 = load float *%ptr7
+ %val8 = load float *%ptr8
+ %val9 = load float *%ptr9
+ %val10 = load float *%ptr10
+
+ %ret = call float @foo()
+
+ %cmp0 = fcmp olt float %ret, %val0
+ %cmp1 = fcmp olt float %ret, %val1
+ %cmp2 = fcmp olt float %ret, %val2
+ %cmp3 = fcmp olt float %ret, %val3
+ %cmp4 = fcmp olt float %ret, %val4
+ %cmp5 = fcmp olt float %ret, %val5
+ %cmp6 = fcmp olt float %ret, %val6
+ %cmp7 = fcmp olt float %ret, %val7
+ %cmp8 = fcmp olt float %ret, %val8
+ %cmp9 = fcmp olt float %ret, %val9
+ %cmp10 = fcmp olt float %ret, %val10
+
+ %sel0 = select i1 %cmp0, float %ret, float 0.0
+ %sel1 = select i1 %cmp1, float %sel0, float 1.0
+ %sel2 = select i1 %cmp2, float %sel1, float 2.0
+ %sel3 = select i1 %cmp3, float %sel2, float 3.0
+ %sel4 = select i1 %cmp4, float %sel3, float 4.0
+ %sel5 = select i1 %cmp5, float %sel4, float 5.0
+ %sel6 = select i1 %cmp6, float %sel5, float 6.0
+ %sel7 = select i1 %cmp7, float %sel6, float 7.0
+ %sel8 = select i1 %cmp8, float %sel7, float 8.0
+ %sel9 = select i1 %cmp9, float %sel8, float 9.0
+ %sel10 = select i1 %cmp10, float %sel9, float 10.0
+
+ ret float %sel10
+}
+
+; Check comparison with zero.
+define i64 @f8(i64 %a, i64 %b, float %f) {
+; CHECK-LABEL: f8:
+; CHECK: ltebr %f0, %f0
+; CHECK-NEXT: je
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %cond = fcmp oeq float %f, 0.0
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; Check the comparison can be reversed if that allows CEB to be used,
+; first with oeq.
+define i64 @f9(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f9:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: je {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp oeq float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then one.
+define i64 @f10(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f10:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jlh {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp one float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then olt.
+define i64 @f11(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f11:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jh {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp olt float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ole.
+define i64 @f12(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f12:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jhe {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ole float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then oge.
+define i64 @f13(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f13:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jle {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp oge float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ogt.
+define i64 @f14(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f14:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jl {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ogt float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ueq.
+define i64 @f15(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f15:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jnlh {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ueq float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then une.
+define i64 @f16(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f16:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jne {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp une float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ult.
+define i64 @f17(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f17:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jnle {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ult float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ule.
+define i64 @f18(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f18:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jnl {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ule float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then uge.
+define i64 @f19(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f19:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jnh {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp uge float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
+
+; ...then ugt.
+define i64 @f20(i64 %a, i64 %b, float %f2, float *%ptr) {
+; CHECK-LABEL: f20:
+; CHECK: ceb %f0, 0(%r4)
+; CHECK-NEXT: jnhe {{\.L.*}}
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %f1 = load float *%ptr
+ %cond = fcmp ugt float %f1, %f2
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}
projects / oota-llvm.git / blobdiff