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197 lines
5.4 KiB
197 lines
5.4 KiB
; Test 32-bit signed comparison in which the second operand is a variable.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i32 @foo()
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; Check register comparison.
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define double @f1(double %a, double %b, i32 %i1, i32 %i2) {
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; CHECK-LABEL: f1:
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; CHECK: crbl %r2, %r3, 0(%r14)
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the low end of the C range.
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define double @f2(double %a, double %b, i32 %i1, i32 *%ptr) {
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; CHECK-LABEL: f2:
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; CHECK: c %r2, 0(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the aligned C range.
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define double @f3(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f3:
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; CHECK: c %r2, 4092(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 1023
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next word up, which should use CY instead of C.
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define double @f4(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f4:
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; CHECK: cy %r2, 4096(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 1024
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the aligned CY range.
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define double @f5(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f5:
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; CHECK: cy %r2, 524284(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 131071
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define double @f6(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r3, 524288
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; CHECK: c %r2, 0(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 131072
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the negative aligned CY range.
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define double @f7(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f7:
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; CHECK: cy %r2, -4(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 -1
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the low end of the CY range.
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define double @f8(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f8:
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; CHECK: cy %r2, -524288(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 -131072
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next word down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define double @f9(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f9:
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; CHECK: agfi %r3, -524292
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; CHECK: c %r2, 0(%r3)
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%base, i64 -131073
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check that C allows an index.
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define double @f10(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
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; CHECK-LABEL: f10:
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; CHECK: c %r2, 4092({{%r4,%r3|%r3,%r4}})
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%add1 = add i64 %base, %index
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%add2 = add i64 %add1, 4092
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%ptr = inttoptr i64 %add2 to i32 *
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check that CY allows an index.
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define double @f11(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
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; CHECK-LABEL: f11:
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; CHECK: cy %r2, 4096({{%r4,%r3|%r3,%r4}})
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; CHECK-NEXT: blr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%add1 = add i64 %base, %index
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%add2 = add i64 %add1, 4096
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%ptr = inttoptr i64 %add2 to i32 *
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%i2 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; The first branch here got recreated by insertBranch while splitting the
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; critical edge %entry->%while.body, which lost the kills information for CC.
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define void @f12(i32 %a, i32 %b) {
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; CHECK-LABEL: f12:
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; CHECK: cije %r2, 0
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; CHECK: crjlh %r2,
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; CHECK: br %r14
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entry:
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%cmp11 = icmp eq i32 %a, 0
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br i1 %cmp11, label %while.end, label %while.body
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while.body:
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%c = call i32 @foo()
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%cmp12 = icmp eq i32 %c, %b
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br i1 %cmp12, label %while.end, label %while.body
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while.end:
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ret void
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}
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; Check the comparison can be reversed if that allows C to be used.
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define double @f13(double %a, double %b, i32 %i2, i32 *%ptr) {
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; CHECK-LABEL: f13:
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; CHECK: c %r2, 0(%r3)
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; CHECK-NEXT: bhr %r14
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%i1 = load i32, i32 *%ptr
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%cond = icmp slt i32 %i1, %i2
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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