derek.holloway
7502bf64a4
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58 lines
1.5 KiB
LLVM
58 lines
1.5 KiB
LLVM
; Test calling functions with multiple return values (LLVM ABI extension)
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Up to four integer return values fit into GPRs.
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declare { i64, i64, i64, i64 } @bar1()
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define i64 @f1() {
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; CHECK-LABEL: f1:
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; CHECK: brasl %r14, bar1
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; CHECK: lgr %r2, %r5
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; CHECK: br %r14
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%mret = call { i64, i64, i64, i64 } @bar1()
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%ret = extractvalue { i64, i64, i64, i64 } %mret, 3
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ret i64 %ret
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}
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; More than four integer return values use sret.
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declare { i64, i64, i64, i64, i64 } @bar2()
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define i64 @f2() {
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; CHECK-LABEL: f2:
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; CHECK: la %r2, 160(%r15)
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; CHECK: brasl %r14, bar2
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; CHECK: lg %r2, 192(%r15)
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; CHECK: br %r14
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%mret = call { i64, i64, i64, i64, i64 } @bar2()
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%ret = extractvalue { i64, i64, i64, i64, i64 } %mret, 4
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ret i64 %ret
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}
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; Up to four floating-point return values fit into GPRs.
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declare { double, double, double, double } @bar3()
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define double @f3() {
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; CHECK-LABEL: f3:
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; CHECK: brasl %r14, bar3
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; CHECK: ldr %f0, %f6
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; CHECK: br %r14
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%mret = call { double, double, double, double } @bar3()
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%ret = extractvalue { double, double, double, double } %mret, 3
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ret double %ret
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}
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; More than four integer return values use sret.
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declare { double, double, double, double, double } @bar4()
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define double @f4() {
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; CHECK-LABEL: f4:
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; CHECK: la %r2, 160(%r15)
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; CHECK: brasl %r14, bar4
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; CHECK: ld %f0, 192(%r15)
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; CHECK: br %r14
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%mret = call { double, double, double, double, double } @bar4()
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%ret = extractvalue { double, double, double, double, double } %mret, 4
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ret double %ret
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}
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