| ; RUN: llc < %s -mtriple=s390x-linux-gnu| FileCheck %s |
| ; RUN: llc < %s -O0 -mtriple=s390x-linux-gnu | FileCheck --check-prefix=CHECK-O0 %s |
| |
| declare i8* @malloc(i64) |
| declare void @free(i8*) |
| %swift_error = type {i64, i8} |
| |
| ; This tests the basic usage of a swifterror parameter. "foo" is the function |
| ; that takes a swifterror parameter and "caller" is the caller of "foo". |
| define float @foo(%swift_error** swifterror %error_ptr_ref) { |
| ; CHECK-LABEL: foo: |
| ; CHECK: lghi %r2, 16 |
| ; CHECK: brasl %r14, malloc |
| ; CHECK: mvi 8(%r2), 1 |
| ; CHECK: lgr %r9, %r2 |
| ; CHECK-O0-LABEL: foo: |
| ; CHECK-O0: lghi %r2, 16 |
| ; CHECK-O0: brasl %r14, malloc |
| ; CHECK-O0: lgr %r0, %r2 |
| ; CHECK-O0: mvi 8(%r2), 1 |
| entry: |
| %call = call i8* @malloc(i64 16) |
| %call.0 = bitcast i8* %call to %swift_error* |
| store %swift_error* %call.0, %swift_error** %error_ptr_ref |
| %tmp = getelementptr inbounds i8, i8* %call, i64 8 |
| store i8 1, i8* %tmp |
| ret float 1.0 |
| } |
| |
| ; "caller" calls "foo" that takes a swifterror parameter. |
| define float @caller(i8* %error_ref) { |
| ; CHECK-LABEL: caller: |
| ; Make a copy of error_ref because r2 is getting clobbered |
| ; CHECK: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK: lghi %r9, 0 |
| ; CHECK: brasl %r14, foo |
| ; CHECK: %r2, %r9 |
| ; CHECK: jlh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK: lb %r[[REG2:[0-9]+]], 8(%r2) |
| ; CHECK: stc %r[[REG2]], 0(%r[[REG1]]) |
| ; CHECK: brasl %r14, free |
| ; CHECK-O0-LABEL: caller: |
| ; CHECK-O0: lghi %r9, 0 |
| ; CHECK-O0: brasl %r14, foo |
| ; CHECK-O0: cghi %r9, 0 |
| ; CHECK-O0: jlh |
| entry: |
| %error_ptr_ref = alloca swifterror %swift_error* |
| store %swift_error* null, %swift_error** %error_ptr_ref |
| %call = call float @foo(%swift_error** swifterror %error_ptr_ref) |
| %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref |
| %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null |
| %tmp = bitcast %swift_error* %error_from_foo to i8* |
| br i1 %had_error_from_foo, label %handler, label %cont |
| cont: |
| %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 |
| %t = load i8, i8* %v1 |
| store i8 %t, i8* %error_ref |
| br label %handler |
| handler: |
| call void @free(i8* %tmp) |
| ret float 1.0 |
| } |
| |
| ; "caller2" is the caller of "foo", it calls "foo" inside a loop. |
| define float @caller2(i8* %error_ref) { |
| ; CHECK-LABEL: caller2: |
| ; Make a copy of error_ref because r2 is getting clobbered |
| ; CHECK: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK: lghi %r9, 0 |
| ; CHECK: brasl %r14, foo |
| ; CHECK: cgijlh %r9, 0, |
| ; CHECK: ceb %f0, |
| ; CHECK: jnh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK: lb %r[[REG2:[0-9]+]], 8(%r9) |
| ; CHECK: stc %r[[REG2]], 0(%r[[REG1]]) |
| ; CHECK: lgr %r2, %r9 |
| ; CHECK: brasl %r14, free |
| ; CHECK-O0-LABEL: caller2: |
| ; CHECK-O0: lghi %r9, 0 |
| ; CHECK-O0: brasl %r14, foo |
| ; CHECK-O0: cghi %r9, 0 |
| ; CHECK-O0: jlh |
| entry: |
| %error_ptr_ref = alloca swifterror %swift_error* |
| br label %bb_loop |
| bb_loop: |
| store %swift_error* null, %swift_error** %error_ptr_ref |
| %call = call float @foo(%swift_error** swifterror %error_ptr_ref) |
| %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref |
| %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null |
| %tmp = bitcast %swift_error* %error_from_foo to i8* |
| br i1 %had_error_from_foo, label %handler, label %cont |
| cont: |
| %cmp = fcmp ogt float %call, 1.000000e+00 |
| br i1 %cmp, label %bb_end, label %bb_loop |
| bb_end: |
| %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 |
| %t = load i8, i8* %v1 |
| store i8 %t, i8* %error_ref |
| br label %handler |
| handler: |
| call void @free(i8* %tmp) |
| ret float 1.0 |
| } |
| |
| ; "foo_if" is a function that takes a swifterror parameter, it sets swifterror |
| ; under a certain condition. |
| define float @foo_if(%swift_error** swifterror %error_ptr_ref, i32 %cc) { |
| ; CHECK-LABEL: foo_if: |
| ; CHECK: cije %r2, 0 |
| ; CHECK: lghi %r2, 16 |
| ; CHECK: brasl %r14, malloc |
| ; CHECK: mvi 8(%r2), 1 |
| ; CHECK: lgr %r9, %r2 |
| ; CHECK-NOT: %r9 |
| ; CHECK: br %r14 |
| ; CHECK-O0-LABEL: foo_if: |
| ; CHECK-O0: chi %r2, 0 |
| ; spill to stack |
| ; CHECK-O0: stg %r9, [[OFFS:[0-9]+]](%r15) |
| ; CHECK-O0: je |
| ; CHECK-O0: lghi %r2, 16 |
| ; CHECK-O0: brasl %r14, malloc |
| ; CHECK-O0: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK-O0: mvi 8(%r2), 1 |
| ; CHECK-O0: lgr %r9, %r[[REG1]] |
| ; CHECK-O0: br %r14 |
| ; reload from stack |
| ; CHECK-O0: lg %r[[REG2:[0-9]+]], [[OFFS]](%r15) |
| ; CHECK-O0: lgr %r9, %r[[REG2]] |
| ; CHECK-O0: br %r14 |
| entry: |
| %cond = icmp ne i32 %cc, 0 |
| br i1 %cond, label %gen_error, label %normal |
| |
| gen_error: |
| %call = call i8* @malloc(i64 16) |
| %call.0 = bitcast i8* %call to %swift_error* |
| store %swift_error* %call.0, %swift_error** %error_ptr_ref |
| %tmp = getelementptr inbounds i8, i8* %call, i64 8 |
| store i8 1, i8* %tmp |
| ret float 1.0 |
| |
| normal: |
| ret float 0.0 |
| } |
| |
| ; "foo_loop" is a function that takes a swifterror parameter, it sets swifterror |
| ; under a certain condition inside a loop. |
| define float @foo_loop(%swift_error** swifterror %error_ptr_ref, i32 %cc, float %cc2) { |
| ; CHECK-LABEL: foo_loop: |
| ; CHECK: lr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK: cije %r[[REG1]], 0 |
| ; CHECK: lghi %r2, 16 |
| ; CHECK: brasl %r14, malloc |
| ; CHECK: mvi 8(%r2), 1 |
| ; CHECK: ceb %f8, |
| ; CHECK: jnh |
| ; CHECK: lgr %r9, %r2 |
| ; CHECK: br %r14 |
| ; CHECK-O0-LABEL: foo_loop: |
| ; spill to stack |
| ; CHECK-O0: stg %r9, [[OFFS:[0-9]+]](%r15) |
| ; CHECK-O0: chi %r{{.*}}, 0 |
| ; CHECK-O0: je |
| ; CHECK-O0: lghi %r2, 16 |
| ; CHECK-O0: brasl %r14, malloc |
| ; CHECK-O0: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK-O0: mvi 8(%r2), 1 |
| ; CHECK-O0: jnh |
| ; reload from stack |
| ; CHECK-O0: lg %r[[REG2:[0-9]+]], [[OFFS:[0-9]+]](%r15) |
| ; CHECK-O0: lgr %r9, %r[[REG2]] |
| ; CHECK-O0: br %r14 |
| entry: |
| br label %bb_loop |
| |
| bb_loop: |
| %cond = icmp ne i32 %cc, 0 |
| br i1 %cond, label %gen_error, label %bb_cont |
| |
| gen_error: |
| %call = call i8* @malloc(i64 16) |
| %call.0 = bitcast i8* %call to %swift_error* |
| store %swift_error* %call.0, %swift_error** %error_ptr_ref |
| %tmp = getelementptr inbounds i8, i8* %call, i64 8 |
| store i8 1, i8* %tmp |
| br label %bb_cont |
| |
| bb_cont: |
| %cmp = fcmp ogt float %cc2, 1.000000e+00 |
| br i1 %cmp, label %bb_end, label %bb_loop |
| bb_end: |
| ret float 0.0 |
| } |
| |
| %struct.S = type { i32, i32, i32, i32, i32, i32 } |
| |
| ; "foo_sret" is a function that takes a swifterror parameter, it also has a sret |
| ; parameter. |
| define void @foo_sret(%struct.S* sret %agg.result, i32 %val1, %swift_error** swifterror %error_ptr_ref) { |
| ; CHECK-LABEL: foo_sret: |
| ; CHECK-DAG: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK-DAG: lr %r[[REG2:[0-9]+]], %r3 |
| ; CHECK: lghi %r2, 16 |
| ; CHECK: brasl %r14, malloc |
| ; CHECK: mvi 8(%r2), 1 |
| ; CHECK: st %r[[REG2]], 4(%r[[REG1]]) |
| ; CHECK: lgr %r9, %r2 |
| ; CHECK-NOT: %r9 |
| ; CHECK: br %r14 |
| |
| ; CHECK-O0-LABEL: foo_sret: |
| ; CHECK-O0: lghi %r{{.*}}, 16 |
| ; spill sret to stack |
| ; CHECK-O0: stg %r2, [[OFFS1:[0-9]+]](%r15) |
| ; CHECK-O0: lgr %r2, %r{{.*}} |
| ; CHECK-O0: st %r3, [[OFFS2:[0-9]+]](%r15) |
| ; CHECK-O0: brasl %r14, malloc |
| ; CHECK-O0: lgr {{.*}}, %r2 |
| ; CHECK-O0: mvi 8(%r2), 1 |
| ; CHECK-O0-DAG: lg %r[[REG1:[0-9]+]], [[OFFS1]](%r15) |
| ; CHECK-O0-DAG: l %r[[REG2:[0-9]+]], [[OFFS2]](%r15) |
| ; CHECK-O0: st %r[[REG2]], 4(%r[[REG1]]) |
| ; CHECK-O0: lgr %r9, {{.*}} |
| ; CHECK-O0: br %r14 |
| entry: |
| %call = call i8* @malloc(i64 16) |
| %call.0 = bitcast i8* %call to %swift_error* |
| store %swift_error* %call.0, %swift_error** %error_ptr_ref |
| %tmp = getelementptr inbounds i8, i8* %call, i64 8 |
| store i8 1, i8* %tmp |
| %v2 = getelementptr inbounds %struct.S, %struct.S* %agg.result, i32 0, i32 1 |
| store i32 %val1, i32* %v2 |
| ret void |
| } |
| |
| ; "caller3" calls "foo_sret" that takes a swifterror parameter. |
| define float @caller3(i8* %error_ref) { |
| ; CHECK-LABEL: caller3: |
| ; Make a copy of error_ref because r2 is getting clobbered |
| ; CHECK: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK: lhi %r3, 1 |
| ; CHECK: lghi %r9, 0 |
| ; CHECK: brasl %r14, foo_sret |
| ; CHECK: jlh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK: lb %r0, 8(%r2) |
| ; CHECK: stc %r0, 0(%r[[REG1]]) |
| ; CHECK: brasl %r14, free |
| |
| ; CHECK-O0-LABEL: caller3: |
| ; CHECK-O0: lghi %r9, 0 |
| ; CHECK-O0: lhi %r3, 1 |
| ; CHECK-O0: stg %r2, {{.*}}(%r15) |
| ; CHECK-O0: lgr %r2, {{.*}} |
| ; CHECK-O0: brasl %r14, foo_sret |
| ; CHECK-O0: lgr {{.*}}, %r9 |
| ; CHECK-O0: cghi %r9, 0 |
| ; CHECK-O0: jlh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK-O0: lb %r0, 8(%r{{.*}}) |
| ; CHECK-O0: stc %r0, 0(%r{{.*}}) |
| ; reload from stack |
| ; CHECK-O0: lg %r2, {{.*}}(%r15) |
| ; CHECK-O0: brasl %r14, free |
| entry: |
| %s = alloca %struct.S, align 8 |
| %error_ptr_ref = alloca swifterror %swift_error* |
| store %swift_error* null, %swift_error** %error_ptr_ref |
| call void @foo_sret(%struct.S* sret %s, i32 1, %swift_error** swifterror %error_ptr_ref) |
| %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref |
| %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null |
| %tmp = bitcast %swift_error* %error_from_foo to i8* |
| br i1 %had_error_from_foo, label %handler, label %cont |
| cont: |
| %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 |
| %t = load i8, i8* %v1 |
| store i8 %t, i8* %error_ref |
| br label %handler |
| handler: |
| call void @free(i8* %tmp) |
| ret float 1.0 |
| } |
| |
| ; This is a caller with multiple swifterror values, it calls "foo" twice, each |
| ; time with a different swifterror value, from "alloca swifterror". |
| define float @caller_with_multiple_swifterror_values(i8* %error_ref, i8* %error_ref2) { |
| ; CHECK-LABEL: caller_with_multiple_swifterror_values: |
| ; CHECK-DAG: lgr %r[[REG1:[0-9]+]], %r2 |
| ; CHECK-DAG: lgr %r[[REG2:[0-9]+]], %r3 |
| ; The first swifterror value: |
| ; CHECK: lghi %r9, 0 |
| ; CHECK: brasl %r14, foo |
| ; CHECK: ltgr %r2, %r9 |
| ; CHECK: jlh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK: lb %r0, 8(%r2) |
| ; CHECK: stc %r0, 0(%r[[REG1]]) |
| ; CHECK: brasl %r14, free |
| |
| ; The second swifterror value: |
| ; CHECK: lghi %r9, 0 |
| ; CHECK: brasl %r14, foo |
| ; CHECK: ltgr %r2, %r9 |
| ; CHECK: jlh |
| ; Access part of the error object and save it to error_ref |
| ; CHECK: lb %r0, 8(%r2) |
| ; CHECK: stc %r0, 0(%r[[REG2]]) |
| ; CHECK: brasl %r14, free |
| |
| ; CHECK-O0-LABEL: caller_with_multiple_swifterror_values: |
| |
| ; The first swifterror value: |
| ; CHECK-O0: lghi %r9, 0 |
| ; CHECK-O0: brasl %r14, foo |
| ; CHECK-O0: jlh |
| |
| ; The second swifterror value: |
| ; CHECK-O0: lghi %r9, 0 |
| ; CHECK-O0: brasl %r14, foo |
| ; CHECK-O0: jlh |
| entry: |
| %error_ptr_ref = alloca swifterror %swift_error* |
| store %swift_error* null, %swift_error** %error_ptr_ref |
| %call = call float @foo(%swift_error** swifterror %error_ptr_ref) |
| %error_from_foo = load %swift_error*, %swift_error** %error_ptr_ref |
| %had_error_from_foo = icmp ne %swift_error* %error_from_foo, null |
| %tmp = bitcast %swift_error* %error_from_foo to i8* |
| br i1 %had_error_from_foo, label %handler, label %cont |
| cont: |
| %v1 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo, i64 0, i32 1 |
| %t = load i8, i8* %v1 |
| store i8 %t, i8* %error_ref |
| br label %handler |
| handler: |
| call void @free(i8* %tmp) |
| |
| %error_ptr_ref2 = alloca swifterror %swift_error* |
| store %swift_error* null, %swift_error** %error_ptr_ref2 |
| %call2 = call float @foo(%swift_error** swifterror %error_ptr_ref2) |
| %error_from_foo2 = load %swift_error*, %swift_error** %error_ptr_ref2 |
| %had_error_from_foo2 = icmp ne %swift_error* %error_from_foo2, null |
| %bitcast2 = bitcast %swift_error* %error_from_foo2 to i8* |
| br i1 %had_error_from_foo2, label %handler2, label %cont2 |
| cont2: |
| %v2 = getelementptr inbounds %swift_error, %swift_error* %error_from_foo2, i64 0, i32 1 |
| %t2 = load i8, i8* %v2 |
| store i8 %t2, i8* %error_ref2 |
| br label %handler2 |
| handler2: |
| call void @free(i8* %bitcast2) |
| |
| ret float 1.0 |
| } |
